Bug 459002

Summary: Mouse hover effect and task switch highlight not working with Breeze Plasma Style.
Product: [Frameworks and Libraries] libplasma Reporter: Teles <teles.ltds>
Component: libplasmaAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED DUPLICATE    
Severity: normal CC: me, nate, notmart, uhhadd
Priority: NOR    
Version: 5.97.0   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Attachments: Hover not working in many applications, with Breeze; working with different themes.

Description Teles 2022-09-11 16:18:24 UTC
Created attachment 151987 [details]
Hover not working  in many applications, with Breeze; working with different themes.

SUMMARY

When using the Breeze Plasma Style, the mouse hover effect is not working in many applications, neither is the Task Switcher highlighting the selected window (the mouse hover is minor, but the task switcher problem is very inconvenient).
So far I've noticed this behavior on the Task Switcher, Application Dashboard, System Tray and Digital Clock (attached video).

I noticed the system still recognizes the mouse hover and selected task, it just doesn't display it.

I tried different themes (attached video). It doesn't happen with Plasma Style - Air or Oxygen. It does happen with Plasma Style - Breeze, Breeze Dark and Breeze Light.
Also, I've tried updating and re-installing packages. It has been a few updates since I first noticed this (my system is up to date with the latest release). I was expecting it was a minor issue that would be fixed soon, but now haven't seen any bug report describing it.

P.S.: This is the first bug report I make here. If I miss something, please educate me. I'll be attentive to present any more information.


STEPS TO REPRODUCE

1. Open System Settings
2. Go to Appearance -> Plasma Style
3. Apply either Breeze, Breeze Dark or Breeze Light.
4. It always happens.


SOFTWARE/OS VERSIONS

Operating System: Arch Linux
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.97.0
Qt Version: 5.15.6
Kernel Version: 5.19.7-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i3-7020U CPU @ 2.30GHz
Memory: 3.7 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 620
Manufacturer: SAMSUNG ELECTRONICS CO., LTD.
Product Name: 340XAA/350XAA/550XAA
System Version: P03REP
Comment 1 Nate Graham 2022-09-13 19:32:48 UTC
Seems like a bug displaying the theme's Highlight SVG. We've had some bugs about this.

Does the problem go away if you clear the Plasma cache with `rm ~/.cache/*plasma*` and then restart plasmashell with `plasmashell --replace`?
Comment 2 Teles 2022-09-20 16:18:11 UTC
(In reply to Nate Graham from comment #1)
> Seems like a bug displaying the theme's Highlight SVG. We've had some bugs
> about this.
> 
> Does the problem go away if you clear the Plasma cache with `rm
> ~/.cache/*plasma*` and then restart plasmashell with `plasmashell --replace`?

Hi. Thanks for the help!!
I tried this, and also, before that, I tried reinstalling all breeze packages with `sudo pacman -Syyu $(pacman -Qsq breeze)` (which in my case targeted the packages: breeze, breeze-gtk and breeze-icons).

After I ran `plasmashell --replace`, all plasma interface (panel, menu, desktop, ...) disappeared. Not sure if that was the intended behavior. So I rebooted.

After reboot the problem went away. I've been using the system for some more time and, so far, it's all in place now. Thanks again.
Comment 3 Nate Graham 2022-09-20 19:41:49 UTC
Thanks, I had a feeling.

*** This bug has been marked as a duplicate of bug 450243 ***