From 48b71f0eb323d08c8fcadfe54adf34becb2984da Mon Sep 17 00:00:00 2001
From: maria <maria@kuuro.net>
Date: Thu, 8 Oct 2026 18:44:05 -0300
Subject: [PATCH] fix(web): collapsed composer reserves room for wide send
 actions (#17016)

---
 apps/web/src/components/chat/ChatComposer.tsx | 31 ++++++++++++-------
 1 file changed, 20 insertions(+), 11 deletions(-)

diff --git a/apps/web/src/components/chat/ChatComposer.tsx b/apps/web/src/components/chat/ChatComposer.tsx
index cfdb03d0f05cf358238ccd33fbc5647a04d1e2f9..4a92c9efa881f3807daa8c739506a5a032c611c4 100644
--- a/apps/web/src/components/chat/ChatComposer.tsx
+++ b/apps/web/src/components/chat/ChatComposer.tsx
@@ -5220,6 +5220,19 @@ export const ChatComposer = memo(function ChatComposer(props: ChatComposerProps)
   useLayoutEffect(() => {
     onRestingChange(isComposerResting);
   }, [isComposerResting, onRestingChange]);
+  // The resting footer floats over the prompt row, so the row reserves its
+  // measured width. Wide actions like the compact-before-send chip vary too much for a fixed inset.
+  const [restingActionsElement, setRestingActionsElement] = useState<HTMLDivElement | null>(null);
+  const [restingActionsWidth, setRestingActionsWidth] = useState<number | null>(null);
+  useLayoutEffect(() => {
+    if (!isComposerResting || !restingActionsElement) return;
+    const measure = () => setRestingActionsWidth(restingActionsElement.offsetWidth);
+    measure();
+    if (typeof ResizeObserver === "undefined") return;
+    const observer = new ResizeObserver(measure);
+    observer.observe(restingActionsElement);
+    return () => observer.disconnect();
+  }, [isComposerResting, restingActionsElement]);
   const restingImagePreviewCounts = getRestingComposerImagePreviewCounts(
     standaloneComposerImages.length,
   );
@@ -7376,17 +7389,12 @@ export const ChatComposer = memo(function ChatComposer(props: ChatComposerProps)
                 )}
 
               <div
-                className={cn(
-                  "relative",
-                  isComposerResting && "flex min-w-0 items-center gap-1",
-                  isComposerResting &&
-                    ((settings.contextWindowMeterEnabled && activeContextWindow) ||
-                    reserveContextWindowMeter
-                      ? "pr-28"
-                      : showComposerAttachAction
-                        ? "pr-20"
-                        : "pr-12"),
-                )}
+                className={cn("relative", isComposerResting && "flex min-w-0 items-center gap-1")}
+                style={
+                  isComposerResting && restingActionsWidth !== null
+                    ? { paddingRight: `calc(${restingActionsWidth}px + 1rem)` }
+                    : undefined
+                }
               >
                 {previewFile ? (
                   <Dialog
@@ -7565,6 +7573,7 @@ export const ChatComposer = memo(function ChatComposer(props: ChatComposerProps)
 
                 {/* Right side: send / stop button */}
                 <div
+                  ref={setRestingActionsElement}
                   data-chat-composer-actions="right"
                   data-chat-composer-transition-actions="true"
                   data-chat-composer-primary-actions-compact={
-- 
2.54.0