Black squares over file tabs row when moving vertical divider

[borismatesin]

Date noticed: 2024-09-05
Distribution: MX Linux
Kernel: Debian 6.6.11-1~mx23ahs (2024-01-18)
Desktop environment: xfce4
Snap modules:

notepad-plus-plus             8.6.9            408    latest/stable       mmtrt       -
snapd                         2.63             21759  latest/stable       canonical✓  snapd
wine-platform-7-devel-core20  7.22             24     latest/stable       mmtrt       -
wine-platform-9-devel-core22  9.16             25     latest/stable       mmtrt       -
wine-platform-runtime-core20  v1.0             132    latest/stable       mmtrt       -
wine-platform-runtime-core22  v1.0             79     latest/stable       mmtrt       -

The tab row has random black squares across the file tab row.
The black squares do not appear on app start.
They start popping up if you have a vertical divider (a document was moved to other view) and start moving the bar left and right.
There is no way to get rid of them except for closing and reopening the app.
They only affect the file tab row, not the rest of the app window.
Looks like a redrawing call problem.

(in example image, mosaic over file path in title is intentional by me, black squares on tabs are the bug)

Thank you in advance.

[mmtrt]

Try fresh install of npp snap though this could be due to wine version change in recent update.

removes snap with all snap data

snap remove --purge notepad-plus-plus 

also remove deprecated snaps

snap remove --purge wine-platform-7-devel-core20

snap remove --purge wine-platform-runtime-core20

[borismatesin]

I removed the NPP snap along with the wine-platform-*-core20 snaps and reinstalled the NPP snap.

The problem still happens as soon as I move the vertical splitter.
The problem also sometimes happens if I minimize or alt-tab over the NPP window and then return back to it a few minutes later, but that doesn't trigger it every time.

[mmtrt]

I can't seem to reproduce the issue here.