Buttons Selection Field

Help & Support
1

When changing a folder, the button's highlight changes its size. Please see the video.
Is it bug or feature?

2

Only when Preferences / Toolbars / Options / Move top-row toolbars into the window title bar is on, correct?

3

No:

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It bugs in every mode.
Video capturing software (Microsoft Xbox Game Bar?) just crops-out the window title bar...