Where does the bug appear (feature/product)?
Cursor IDE
Describe the Bug
In the Agent chat composer, a vertical scrollbar appears even when the input is completely empty (only placeholder text is shown). The field is still one-line tall, so there is nothing that should overflow. This looks like an overflow/auto-height miscalculation in the composer textarea.
Steps to Reproduce
- Open Cursor IDE Agent/Chat panel.
- Start a new chat (or clear the composer so it is empty).
- Focus the bottom input; leave it empty so only the placeholder is visible (“Plan, Build, / for skills, @ for context”).
- Observe the right edge of the composer.
Expected Behavior
When the composer is empty / single-line, no vertical scrollbar should be shown. The scrollbar should only appear once content actually overflows the composer height.
Operating System
MacOS
Version Information
Version: 3.19.19
VSCode Version: 1.128.0
Commit: 6496ea8a068aebfcd21990e70ff522e9abf10c80
Build Type: Stable
Electron/OS: darwin arm64 (macOS 15.6 / darwin 24.6.0)
Additional Information
UI-only cosmetic/layout bug; does not block typing. Screenshot attached shows empty composer with placeholder + Agent/Auto controls, and a visible vertical scrollbar thumb on the right.
Likely cause: composer textarea overflow-y is set to auto/scroll while computed content height is slightly larger than the visible area (e.g. line-height / padding / control-bar layout mismatch), so the browser shows a scrollbar even with zero user text.
Does this stop you from using Cursor
No - Cursor works, but with this issue
