Scroll position jumps to top on Windows when inserting elements into Feed

[Soulele]

Hi everyone,

I noticed an issue with Toga on Windows: when inserting a new element into a Feed, the view jumps to the top. This only happens on Windows on macOS the scroll position stays where it should.

Has anyone experienced this before? Is there a way to prevent the scroll from resetting on Windows, or any alternative approaches to handle this behavior?

We suspect that switching to an HTML-based GUI might solve the problem, but this is not yet confirmed by experiments.

Any advice or suggestions would be greatly appreciated. Thank you!

[freakboy3742]

You'll need to provide a little more detail about what you're doing here - "Feed" isn't a Toga object, and it's not clear what scrolling widget you're using.

[Soulele]

By “Feed”, I meant a ScrollContainer. On macOS, when I add a new item, the scroll position stays the same, but on Windows, the view jumps back to the top. Is this the expected behavior on Windows? And is there a way to preserve the scroll position after adding a new item?

Thanks again for your help!

[freakboy3742]

It's not explicitly expected behavior; it's a side effect of the platform-specific implementation. We'd definitely be open to a bug fix that prevented this sort of scroll position change; I can't say I know of an immediate workaround.