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[Bug]: Subagent parent link lacks pointer cursor and visible hover feedback on Windows #15159
Description
Activity
Note
Grok responding on behalf of Julius.
Triage
Thanks @Neonsy for the clear repro and for already pointing at the source. I confirmed this on current
main. It isn't specific to the Windows desktop app; it should look the same on macOS and Linux.The "Subagent of" pill is the action state of
TimelineSystemDivider(apps/web/src/components/chat/TimelineSystemDivider.tsx). The button works, but its classes are only:flex min-w-0 items-center gap-1.5 rounded-full border border-border/70 bg-background px-2.5 py-1 transition-colors hover:bg-mutedTwo separate things make it feel inert:
- Cursor. It's a raw
<button>with nocursor-pointer, and Tailwind v4 preflight leaves buttons on the default arrow. The sharedButtonand the other chat controls setcursor-pointerthemselves. - Hover fill.
hover:bg-mutedis there, as you noted, but the resting fill isbg-background, and in the default theme those tokens are nearly identical (light#fcfcfc→#fafafa, dark#0a0a0a→#111111). That step doesn't read as a hover, so the "Open parent thread" tooltip is the only obvious feedback.
The same button is used for the fork dividers ("Forked from conversation" / "Conversation fork"), so they share the gap.
Likely fix area
The in-timeline subagent row in
V2LifecycleRow.tsxalready handles this withcursor-pointer,hover:bg-accent/20, and afocus-visiblering. Following that pattern inTimelineSystemDivider, including a visible focus ring (the button has none today), would cover the pill and the fork dividers. A maintainer will decide on the exact styling.The nightly you reported (
fed41fa88bb2) is an ancestor of currentmain, and this component hasn't changed since, so no further info is needed.- Cursor. It's a raw
Before submitting
Area
apps/web
Steps to reproduce
Expected behavior
The clickable parent-thread pill should show a pointer cursor and a clearly visible hover state, so users can tell that it opens another thread
Actual behavior
The pill is clickable and opens the parent thread, but the cursor does not change and there is no visible hover feedback in the Windows desktop app
Source inspection for this nightly: TimelineSystemDivider renders this as a button without an explicit cursor-pointer class. It already has transition-colors and hover:bg-muted, so the observed missing hover feedback should be investigated rather than assuming that no hover styling exists
https://github.com/pingdotgg/t3code/blob/fed41fa88bb2/apps/web/src/components/chat/TimelineSystemDivider.tsx#L47-L53
Impact
Cosmetic issue
Version or commit
0.0.46-nightly.20261003.2623 (fed41fa)
Environment
Windows 10 Pro (10.0.19045, build 19045), T3 Code desktop app
Logs or stack traces
Screenshots, recordings, or supporting files
No response
Workaround
Click the “Subagent of” pill to open the parent thread even though it does not visually indicate that it is clickable