[list-dropdown] flickering/incorrect placement when scrolling anchor off-screen

[MikeMatusz]

Describe the bug:
This could be an issue with the floating-ui library, although they tend to defer similar issues as incorrect middleware usage.

To Reproduce:
In our case, we have a chips autocomplete in a scrollable sidebar on the right edge of the page. Seems like it might be sensitive to window size.

1. Open the autocomplete dropown.
2. Scroll the autocomplete input off-screen and back on slowly several times.
3. See the dropdown sometimes appear detached from the input at the top-right corner of the container, sometimes flickering back and forth a few times before settling.

Expected behavior:
List drodpown should consistently be hidden when the anchor is off-screen, or attached to the anchor when on-screen.

Screenshots:
I have a recording of this happening, but can't upload it here because the software is internal.

Please complete the following information:

• Forge version: 3.3.3
• I have searched existing issues before creating this report? Y
• Browser: Chrome, maybe others
• Platform: desktop
• OS: Windows, maybe others

Additional context: