On 04/03/2023 02:01, Po Lu wrote:
But there is a persistent glitch: when the window configuration
changes, 1 or 2 vertical bars often flash:
https://a.uguu.se/iYTlOftH.mp4 (with emacs -Q)
https://a.uguu.se/YdDWpMid.mp4 (with my config but with tool-bar and
scroll-bar modes enabled)
scroll-bar-mode on seems to be required to reproduce this.
This is expected: moving the scroll bar causes exposures, which can
cause flickering. That's the problem double buffering is supposed to
fix.
Isn't it odd, though, that in both cases the glitch is positioned around
1/2 of the scroll-bar's horizontal coordinate (relative to the left edge
of the frame)? When there is one scroll-bar, there is one glitch; when
there are two scroll-bars, there are two glitches.
My guess is that might be related to the display scale (2x).