The overview lane lies over the vertical scrollbar, so a mark the height of the lane (a new file added to git is one green VCS mark) hid the native thumb completely. The lane now draws the thumb itself, above its marks and without taking the pointer, at the position of the native one (scrollbarThumb, inset by its 2px border); it switches to the hover color while the pointer is on the thumb. The native thumb is made transparent in editors that have the lane, so the two don't add up, and still takes the drag. Editors without the lane (notebook cells, previews) keep the native thumb.
Fixes#1014
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
The overview lane lies over the vertical scrollbar and its marks take the pointer, so a mark under the thumb swallowed the press; a new or fully changed file is one lane-high mark, so its thumb could not be dragged at all. While the pointer is over the thumb (computed from the scroller's metrics and the 32px minimum thumb) the marks now let the pointer through; elsewhere clicking a mark still jumps to its line.
Fixes#752
Co-authored-by: HEOJUNFO <100739943+HEOJUNFO@users.noreply.github.com>
JawandClaude Opus 5.5
HEOJUNFO