Not all staged files shown if filenumber is to high

[lukasdietz]

Summary

When the number of staged files exceeds the visible area, the Staged files list does not render all items even though a scrollbar appears. Scrolling works correctly in the Unstaged list but not in the Staged list. This results in an incomplete/partially rendered Staged files list and prevents accessing items beyond the initial viewport.

Steps to reproduce

1. Create a new repository
2. Generate files ( in my case 20 )
3. Stage all files
4. Scroll the staged list

Expected Behaviour

• Same as on the unstaged panel/list
• Scrollbar is displayed if number of files exeed display space

Actual Behaviour

• The staged list shows a scrollbar but is not rendering the full list
• If the panel is resized so all items fit without scrolling, all files are displayed

Details

Version: 2026.12
Source revision: d67c995
OS: Debian 13.5

[love-linger]

I can not reproduce this issue with the latest develop branch. And there are lots of changes after 2026.12 in it (I have upgraded the AvaloniaUI from 11.x to 12.x).

Could you please download an test the latest CI build from GitHub Action to see if these issue still exists?

[lukasdietz]

Thanks for your fast response.
Unfortunately the error persists on my end even with the newest source revision c7395b6.

[love-linger]

The scrollbar is a built-in element of ListBox and I can see that in your screenshot the scrollbar takes the entire height of the STAGED area. It means that the height of ListBox is correct, but the viewport of ScrollViewer is wrong.

[lukasdietz]

Unfortunately I do not have more technical insights but your assumtion sounds right.
The scrollbar is only showing up if the ListBox Space is indeed to small for all files to fit but not the whole space is used to display files (there is always unused space on the bottom half). This might be the root cause?

[love-linger]

I think it is an issue about ListBox in AvaloniaUI. But I can not reproduce it on my Ubuntu 24.04.