diff --git a/docs/tickets/mps-24.md b/docs/tickets/mps-24.md
index a00640e..d774136 100644
--- a/docs/tickets/mps-24.md
+++ b/docs/tickets/mps-24.md
@@ -363,7 +363,40 @@ Tests (`test_functional.py::TestProductTagsSpa`):
 Deferred (occasional click, not the hot path): AJAX-ifying the
 "Suggest categories" link — still a full navigation by design.
 
-**Phase 2.8e — the LAST link: `form.action` DOM-clobbered** (shipped
+**Phase 2.8h — facets compose, not clobber** (shipped 2026-05-16):
+operator: "switching one breaks it" — picking a category reset the
+active Sort + Price. Cause: the facet category links / "All" link /
+top chips / lane "See all" all pointed at a bare
+`{tag_base}/tag/{slug}` with **no query string**, so a click dropped
+`?sort=` / `?price_*`. (The Sort `<select>`/Price form already
+preserved the tag via `action=""` + path, and each other as sibling
+fields — only category navigation lost state.) Fix: one shared
+`facet_qs(sort_key, price_min, price_max)` macro in `_facet_nav.j2`
+returning the `?sort=…&price_min=…&price_max=…` suffix; appended to
+every category/All/chip/See-all href in `_facet_nav.j2`, `home.j2`,
+`shop.j2`. URL state, **not localStorage** (operator's suggestion):
+shareable, no-JS, back-button correct, and the destination SERP
+already reads those params. Tests:
+`test_facet_links_preserve_sort_and_price`,
+updated `test_tag_detail_renders_facet_sidebar` /
+`test_facet_category_link_renders_tag_detail_not_home`.
+
+**Phase 2.8g — facet sidebar nested scrollbar removed** (shipped
+2026-05-16): `ul.facet-tag-list` had `max-height:60vh;
+overflow-y:auto` → ugly inner scrollbar on the sidebar / mobile
+accordion. Dropped; the list flows full-height and the page scrolls.
+
+**Phase 2.8f — chips navigate to the tag SERP like the left nav**
+(shipped 2026-05-16): the top chip strip's category links already
+pointed at `{tag_base}/tag/{slug}`, but `tag_filter.js` decided
+whether to intercept by inspecting **`chips[0]`** — the "All" chip,
+which points at the shop home (no `/tag/`) — so it never detected the
+real category links and always did the in-place "default cards"
+hide/show. Now it scans ALL chips: any `/tag/` href → bail → full
+navigation, so a chip behaves exactly like its matching left-nav
+category (server renders the SERP in the shop's `home_layout`).
+
+**Phase 2.8e — `form.action` DOM-clobbered by `<input name=action>`** (shipped
 2026-05-16): with 2.8d live, the operator's Network panel showed the
 proxy-proof `ajax=1` working (a real `fetch` to `tags` → 200, 0.7 kB
 JSON) — but also four requests to a URL literally named
diff --git a/make_post_sell/templates/_facet_nav.j2 b/make_post_sell/templates/_facet_nav.j2
index cb972f3..004eab8 100644
--- a/make_post_sell/templates/_facet_nav.j2
+++ b/make_post_sell/templates/_facet_nav.j2
@@ -29,6 +29,20 @@
 {%- if cents is not none -%}{{ (cents / 100)|round(2) }}{%- endif -%}
 {% endmacro %}
 
+{# Carry the active sort + price across every category link / chip so
+   switching category does NOT reset sort/price (and vice versa). URL
+   state, not localStorage: shareable, no-JS, back-button correct, and
+   the destination SERP already reads ?sort= / ?price_*. Returns the
+   FULL suffix incl. leading "?" when non-empty, else "" — append it
+   verbatim to a query-less href. #}
+{% macro facet_qs(sort_key, price_min, price_max) -%}
+{%- set ns = namespace(parts=[]) -%}
+{%- if sort_key -%}{%- set ns.parts = ns.parts + ['sort=' ~ sort_key] -%}{%- endif -%}
+{%- if price_min is not none -%}{%- set ns.parts = ns.parts + ['price_min=' ~ (fmt_cents(price_min)|trim)] -%}{%- endif -%}
+{%- if price_max is not none -%}{%- set ns.parts = ns.parts + ['price_max=' ~ (fmt_cents(price_max)|trim)] -%}{%- endif -%}
+{%- if ns.parts -%}?{{ ns.parts|join('&') }}{%- endif -%}
+{%- endmacro %}
+
 {% macro facet_form(base_url, tag_base, sort_options, sort_key, price_min, price_max, facet_tags, active_tag) %}
 <form method="get" action="" class="facet-form">
 
@@ -68,13 +82,13 @@
     <h2 class="facet-title">Categories</h2>
     <ul class="facet-tag-list">
       <li>
-        <a href="{{ base_url }}"
+        <a href="{{ base_url }}{{ facet_qs(sort_key, price_min, price_max) }}"
            class="facet-tag{% if active_tag is none %} facet-tag-active{% endif %}"
            rel="nofollow">All</a>
       </li>
       {% for t in facet_tags %}
       <li>
-        <a href="{{ tag_base }}/tag/{{ t.slug }}"
+        <a href="{{ tag_base }}/tag/{{ t.slug }}{{ facet_qs(sort_key, price_min, price_max) }}"
            class="facet-tag{% if active_tag and active_tag.id == t.id %} facet-tag-active{% endif %}"
            rel="nofollow">
           <span class="facet-tag-name">{{ t.name }}</span>
diff --git a/make_post_sell/templates/home.j2 b/make_post_sell/templates/home.j2
index 4974c91..0422b72 100644
--- a/make_post_sell/templates/home.j2
+++ b/make_post_sell/templates/home.j2
@@ -94,12 +94,12 @@
      lock-step. tag_filter.js keeps full navigation for /tag/ hrefs. #}
   {% if home_chips %}
   <nav class="tag-chip-strip" data-tag-strip aria-label="Browse by category">
-    <a href="{{ shop_url }}"
+    <a href="{{ shop_url }}{{ facet.facet_qs(sort_key, price_min, price_max) }}"
        class="tag-chip{% if not active_tag %} tag-chip-active{% endif %}"
        data-tag-slug=""
        rel="nofollow">All</a>
   {% for chip in home_chips %}
-    <a href="{{ tag_base }}/tag/{{ chip.slug }}"
+    <a href="{{ tag_base }}/tag/{{ chip.slug }}{{ facet.facet_qs(sort_key, price_min, price_max) }}"
        class="tag-chip{% if active_tag and active_tag.id == chip.id %} tag-chip-active{% endif %}"
        data-tag-slug="{{ chip.slug }}"
        rel="nofollow">{{ chip.name }}</a>
@@ -124,7 +124,7 @@
   <section class="tag-lane" data-tag-lane="{{ lane.tag.slug }}">
     <header class="tag-lane-header">
       <h2 class="type-title tag-lane-title">{{ lane.tag.name }}</h2>
-      <a href="{{ tag_base }}/tag/{{ lane.tag.slug }}" class="tag-lane-more shop-theme-link-color" rel="nofollow">See all &rarr;</a>
+      <a href="{{ tag_base }}/tag/{{ lane.tag.slug }}{{ facet.facet_qs(sort_key, price_min, price_max) }}" class="tag-lane-more shop-theme-link-color" rel="nofollow">See all &rarr;</a>
     </header>
 
     {# Desktop: horizontal tile scroll (Netflix-style). Hidden <800px. #}
diff --git a/make_post_sell/templates/shop.j2 b/make_post_sell/templates/shop.j2
index 502696f..db01a8b 100644
--- a/make_post_sell/templates/shop.j2
+++ b/make_post_sell/templates/shop.j2
@@ -24,12 +24,12 @@
    state. #}
 {% if home_chips %}
 <nav class="tag-chip-strip" data-tag-strip aria-label="Browse by category">
-  <a href="{{ shop_url }}"
+  <a href="{{ shop_url }}{{ facet.facet_qs(sort_key, price_min, price_max) }}"
      class="tag-chip{% if not active_tag %} tag-chip-active{% endif %}"
      data-tag-slug=""
      rel="nofollow">All</a>
 {% for chip in home_chips %}
-  <a href="{{ tag_base }}/tag/{{ chip.slug }}"
+  <a href="{{ tag_base }}/tag/{{ chip.slug }}{{ facet.facet_qs(sort_key, price_min, price_max) }}"
      class="tag-chip{% if active_tag and active_tag.id == chip.id %} tag-chip-active{% endif %}"
      data-tag-slug="{{ chip.slug }}"
      rel="nofollow">{{ chip.name }}</a>
@@ -53,7 +53,7 @@
 <section class="tag-lane" data-tag-lane="{{ lane.tag.slug }}">
   <header class="tag-lane-header">
     <h2 class="type-title tag-lane-title">{{ lane.tag.name }}</h2>
-    <a href="{{ tag_base }}/tag/{{ lane.tag.slug }}" class="tag-lane-more shop-theme-link-color" rel="nofollow">See all &rarr;</a>
+    <a href="{{ tag_base }}/tag/{{ lane.tag.slug }}{{ facet.facet_qs(sort_key, price_min, price_max) }}" class="tag-lane-more shop-theme-link-color" rel="nofollow">See all &rarr;</a>
   </header>
 
   {# Desktop: horizontal tile scroll. Hidden <800px. #}
diff --git a/make_post_sell/tests/test_functional.py b/make_post_sell/tests/test_functional.py
index 50287dd..1626c62 100644
--- a/make_post_sell/tests/test_functional.py
+++ b/make_post_sell/tests/test_functional.py
@@ -8903,7 +8903,10 @@ class TestHomeLayoutAndTags(_AuthenticatedBase):
         # (/s/{id}/tag/{slug}), NOT /s/{id}/{shop_slug}/tag/{slug}.
         # The latter falls through to the shop_slug catch-all and
         # renders the shop home instead of the filtered tag page.
-        self.assertIn(f'/s/{shop.id}/tag/math"', body)
+        # The link now also carries the active sort/price as a query
+        # string so switching category doesn't reset them (facet_qs).
+        self.assertIn(f'/s/{shop.id}/tag/math?', body)
+        self.assertIn(f'/s/{shop.id}/tag/math?sort=', body)
         self.assertNotIn(f'/s/{shop.id}/{shop.slug}/tag/', body)
 
     def test_facet_category_link_renders_tag_detail_not_home(self):
@@ -8933,7 +8936,9 @@ class TestHomeLayoutAndTags(_AuthenticatedBase):
         )
         # The shop home sidebar link must be the slug-less tag route.
         res = self.testapp.get(f"/s/{shop.id}/{shop.slug}")
-        self.assertIn(f'/s/{shop.id}/tag/math"', res.body.decode())
+        # Slug-less tag route, now carrying the facet query string so
+        # switching category preserves sort/price (facet_qs).
+        self.assertIn(f'/s/{shop.id}/tag/math?', res.body.decode())
         # Following that exact route renders the tag detail SERP page,
         # which carries the unique .tag-detail-header h1 (the shop home
         # lanes view never emits that element).
@@ -8942,6 +8947,50 @@ class TestHomeLayoutAndTags(_AuthenticatedBase):
         self.assertIn('tag-detail-header', body)
         self.assertIn('serp-list', body)
 
+    def test_facet_links_preserve_sort_and_price(self):
+        """Operator report: 'switching one breaks it' — changing category
+        reset sort/price. Every category link / All link / chip / lane
+        'See all' must carry the active sort+price (facet_qs) so the
+        facets compose instead of clobbering each other."""
+        shop, product = self._make_shop_with_product("facet-state-shop")
+        self.testapp.post(
+            f"/s/{shop.id}/settings",
+            {
+                "form_section": "home-layout-settings",
+                "home_layout": "2",
+                "home_layout_tag_limit": "5",
+                "home_layout_per_lane_limit": "10",
+                "submit": "Save Home Layout",
+            },
+        )
+        self.testapp.post(
+            f"/p/{product.id}/edit",
+            {
+                "title": product.title,
+                "description": "One. Two. Three. Four. Five. Six.",
+                "price": str(product.price),
+                "visibility": "1",
+                "tags": "Math",
+            },
+        )
+        # Land on the tag SERP with an active sort + price floor.
+        res = self.testapp.get(
+            f"/s/{shop.id}/tag/math?sort=price_asc&price_min=1"
+        )
+        body = res.body.decode()
+        # The "All" link must carry sort+price (so clearing the category
+        # keeps the shopper's sort/price), and so must other category
+        # links — none may drop the state.
+        self.assertIn("sort=price_asc", body)
+        self.assertIn("price_min=1", body)
+        # No category link may point at the bare slug-less route with no
+        # query string (that would reset sort/price on click).
+        self.assertNotIn(f'/s/{shop.id}/tag/math"', body)
+        # Both facets travel together on the SAME link (compose, not
+        # clobber). The & is HTML-escaped to &amp; in the href attribute
+        # (Jinja autoescape) — browsers decode it back to & in the URL.
+        self.assertIn("sort=price_asc&amp;price_min=1.0", body)
+
     def test_tag_detail_price_filter_narrows_grid(self):
         """?price_min and ?price_max remove products outside the range."""
         shop = self._create_shop_helper(