gnome-tweaks title&window keep flipping between option mouse is hovering over & what was displayed

[Chris Guiver]

title: gnome-tweaks title & window keep flipping between option mouse is hovering over & what was displayed
- hp dc7700 (c2d-e6320, 5gb, nvidia quadro nvs 290)

I did a QA-test install of Ubuntu hirsute a few days ago. Today I opted to look around, and `sudo apt install gnome-tweaks`

On opening gnome-tweaks, at first all went well; but as I move mouse down to 'Top Bar', the window becomes unreadable as it flashest between what was being displayed, and what I assume is the "Top Bar"...

Currently with the pointer over "Top Bar" the title of the window seems to alternate between "Window Titl????dow Titlebars" with the middle unreadable, and " ???? "

I see on the left General/Titlebar Actions/Double Click/Appearance/Extensions/Fonts/Secondary-Click/Startup Applications/Maximize/WIndows/Workspaces with it constantly flashing (likely they aren't being all displayed at once but alternating but they it's hard to read due to changing many times per second).

The window appeasr to alter between black & Titlebar Actions, Doubel Click, Middle Click, Secondary-Click, Titlebar buttons Maximize, Minimize, Placememt"

Changes I made before I noticed this effect was moving buttons to left, and disable animations (a old slow c2d box

It's likely the issue isn't a problem with gnome-tweaks but Wayland or video driver (kernel module) but I've only noticed this issue with `gnome-tweaks` so I've filed against that.

(I'll not keep this setup long, I'm to do more Lubuntu QA-test installs on it which are full-disk, but I can re-install a daily ISO on request. Only changes were adjusting display position to match my setup & addition of gnome-tweaks tool).

https://photos.google.com/share/AF1QipNYQkub758NhGXr5cDMRx0qn973vnRC2Z7mXjHFCVLX6PVlyNWnkWnPWuKnmnB5ww/photo/AF1QipM59TtRKw_UNmPohwZLP3yK87-xeeqzP3JG9fMN?key=SWx6VlBLMUxVZmg2N2t4b3p1bXhoWV9NNjJ1Vnhn

You'll note in crappy video the issue only occurs when mouse is over the left-side of the gnome-tweaks window (audio: my pup wants his walk..)

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: gnome-tweaks 3.34.0-4
ProcVersionSignature: Ubuntu 5.11.0-13.14-generic 5.11.7
Uname: Linux 5.11.0-13-generic x86_64
ApportVersion: 2.20.11-0ubuntu61
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Apr 6 13:08:04 2021
InstallationDate: Installed on 2021-04-01 (4 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Beta amd64 (20210331.1)
PackageArchitecture: all
SourcePackage: gnome-tweaks
UpgradeStatus: No upgrade log present (probably fresh install)