Regression: Unable to scroll settings with mouse wheel

[fredemmott]

Windows Terminal version

1.21.3231.0

Windows build number

10.0.22631.4602

Other Software

No response

Steps to reproduce

1. Open settings
2. Go to a page with a scroll bar, such as 'Profiles' -> 'defaults' -> 'appearance'
3. Attempt to scroll with scroll wheel

Expected Behavior

Settings list scrolls

Actual Behavior

Either:

• nothing
• if 'appearance' is open, sometimes the scroll wheel changes the color scheme, even if the color scheme combo box has never been focussed, and even if the mouse is over it

[similar-issues-ai]

We've found some similar issues:

• Scrolling in the settings does not work on Windows 10 #12352 , similarity score: 84%

If any of the above are duplicates, please consider closing this issue out and adding additional context in the original issue.

Note: You can give me feedback by 👍 or 👎 this comment.

[fredemmott]

It is a similar one, but it is a new regression; Most likely it is the regression introduced in WinUI3 v1.6, which also affects all other WinUI3 apps, including the WinUI 3 Gallery - however my report there has essentially been closed as 'works on my machine'.

microsoft/microsoft-ui-xaml#9979

[fredemmott]

Interestingly, scrolling in actual terminal tabs works fine - it's just the settings page. It looks like the terminal tabs have their own WM_MOUSEWHEEL handing here, rather than depending on WinUI3: src/terminal/input/mouseInput.cpp

[fredemmott]

Worked around by turning on this windows setting:

[DHowett]

Most likely it is the regression introduced in WinUI3 v1.6

Unfortunately, the trick here is that Terminal is not using WinUI 3. The only version of WinUI we use is the one that comes with the OS.

[fredemmott]

Sorry for the misleading comments then :) Interesting that the same workaround works