From 28b1672a33b194dbd230bf806820b0dfaab4ae30 Mon Sep 17 00:00:00 2001
From: Raphael Prasquier <raphael@imagine-app.fr>
Date: Sat, 3 Oct 2026 18:10:28 +0200
Subject: [PATCH] fix(web): switch thumbs stay in their track while scrolling

The switch thumb carried `will-change-transform`, which promotes it to its
own compositor layer. While scrolling, that layer is composited a frame
apart from the rest of the page, so the thumb visibly slides out of its
track. The thumb only animates `translate` on toggle, which does not need
the hint.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
---
 apps/web/src/components/ui/menu.tsx   | 2 +-
 apps/web/src/components/ui/switch.tsx | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/apps/web/src/components/ui/menu.tsx b/apps/web/src/components/ui/menu.tsx
index a8687dcdbc7de..e1e94546742a2 100644
--- a/apps/web/src/components/ui/menu.tsx
+++ b/apps/web/src/components/ui/menu.tsx
@@ -148,7 +148,7 @@ function MenuCheckboxItem({
             className="inset-shadow-[0_1px_--theme(--color-black/4%)] inline-flex h-[calc(var(--thumb-size)+2px)] w-[calc(var(--thumb-size)*2-2px)] shrink-0 items-center rounded-full p-px outline-none transition-[background-color,box-shadow] duration-200 [--thumb-size:--spacing(4)] focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-1 focus-visible:ring-offset-background data-checked:bg-primary data-unchecked:bg-input data-disabled:opacity-64 sm:[--thumb-size:--spacing(3)]"
             keepMounted
           >
-            <span className="pointer-events-none block aspect-square h-full in-[[data-slot=menu-checkbox-item][data-checked]]:origin-[var(--thumb-size)_50%] origin-left in-[[data-slot=menu-checkbox-item][data-checked]]:translate-x-[calc(var(--thumb-size)-4px)] in-[[data-slot=menu-checkbox-item]:active]:not-data-disabled:scale-x-110 in-[[data-slot=menu-checkbox-item]:active]:rounded-[var(--thumb-size)/calc(var(--thumb-size)*1.10)] rounded-(--thumb-size) bg-background shadow-sm/5 will-change-transform [transition:translate_.15s,border-radius_.15s,scale_.1s_.1s,transform-origin_.15s]" />
+            <span className="pointer-events-none block aspect-square h-full in-[[data-slot=menu-checkbox-item][data-checked]]:origin-[var(--thumb-size)_50%] origin-left in-[[data-slot=menu-checkbox-item][data-checked]]:translate-x-[calc(var(--thumb-size)-4px)] in-[[data-slot=menu-checkbox-item]:active]:not-data-disabled:scale-x-110 in-[[data-slot=menu-checkbox-item]:active]:rounded-[var(--thumb-size)/calc(var(--thumb-size)*1.10)] rounded-(--thumb-size) bg-background shadow-sm/5 [transition:translate_.15s,border-radius_.15s,scale_.1s_.1s,transform-origin_.15s]" />
           </MenuPrimitive.CheckboxItemIndicator>
         </>
       ) : (
diff --git a/apps/web/src/components/ui/switch.tsx b/apps/web/src/components/ui/switch.tsx
index e6bf20aa64c7e..826f35382dfbe 100644
--- a/apps/web/src/components/ui/switch.tsx
+++ b/apps/web/src/components/ui/switch.tsx
@@ -35,7 +35,7 @@ function Switch({
     >
       <SwitchPrimitive.Thumb
         className={cn(
-          "pointer-events-none block size-[calc(var(--thumb-size)-2px)] shrink-0 origin-left in-[[role=switch]:active,[data-slot=label]:active,[data-slot=field-label]:active]:not-data-disabled:scale-x-110 in-[[role=switch]:active,[data-slot=label]:active,[data-slot=field-label]:active]:rounded-[var(--thumb-size)/calc(var(--thumb-size)*1.1)] rounded-(--thumb-size) bg-background shadow-sm/5 will-change-transform [transition:translate_.15s,border-radius_.15s,scale_.1s_.1s,transform-origin_.15s] data-checked:origin-right data-checked:translate-x-[calc(var(--thumb-size)-4px)]",
+          "pointer-events-none block size-[calc(var(--thumb-size)-2px)] shrink-0 origin-left in-[[role=switch]:active,[data-slot=label]:active,[data-slot=field-label]:active]:not-data-disabled:scale-x-110 in-[[role=switch]:active,[data-slot=label]:active,[data-slot=field-label]:active]:rounded-[var(--thumb-size)/calc(var(--thumb-size)*1.1)] rounded-(--thumb-size) bg-background shadow-sm/5 [transition:translate_.15s,border-radius_.15s,scale_.1s_.1s,transform-origin_.15s] data-checked:origin-right data-checked:translate-x-[calc(var(--thumb-size)-4px)]",
           mixed &&
             "translate-x-[calc((var(--thumb-size)-4px)/2)] opacity-70 data-checked:translate-x-[calc((var(--thumb-size)-4px)/2)]",
         )}