https://bugs.kde.org/show_bug.cgi?id=406800

--- Comment #2 from mapp...@gmail.com ---
(In reply to Vlad Zagorodniy from comment #1)
> > it affects dragging window,
> Hmm, this one is a bit interesting. Do you move windows by dragging titlebar?

The top-left 1920x1200 region of my 2560x1440 monitor is unusable. The mouse
input seems to go through to the XWayland window, but to the wrong coordinate
within the window. It has the correct y position but a wrong x position. The x
position is fixed to x=1920-ish (screen coordinates).

Example: I put the Chromium window straddling the cut-off screen position. If i
hover over a bookmark on the bookmarks bar, a different bookmark
further-to-the-right is highlighted. On click, that other bookmark is loaded.

Chromium uses client-side window decorations and so moving is affected. When
dragging from inside the window, the mouse "jumps" immediately to its "new
effective" position.

If i enable system window decorations in Chromium, or if i run a different
XWayland app (e.g. `QT_QPA_PLATFORM=xcb kate`), there's no problem moving the
window by its border. I guess this happens all within Wayland, and, the problem
is confined to XWayland.

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