Bug 450801

SUMMARY

after days or in some cases weeks after fresh installation; application menu and or task bar freezes completely or takes 20-30 seconds to respond to each click. Totally unusable. A reboot is the only known way to resolve the problem, only to reoccure just minutes or hours later after the reboot, or in some cases days later. Its seemingly random without any observable cause.  

there does not seem to be any specific application associated with this issues. It is NOT related to a lack of system resources. many of the systems have different kernels 4.19, 5.10, 5.14, 5.15. all these systems are being used by different people with completely different environments and use cases. none of these systems have kernel errors or any errors related to plasma or misbehaving apps in the system logs. all have different GPU's, amd, intel, nvidia and various models. 

so far we have many users all experiencing this issue. These systems are a mix of  MX Linux Wildflower and also pure Debian 11 with KDE (both non-free and Live installs), both have exactly the same issue. 

Debian 11 and MX wildflower are both      Plasma 5.20.5
Plasma Frameworks 5.78
Qt 5.15.2

Systems affected so far:
Thinkpad 590   (i7 NVME SSD + 32GB ram)
Thinkpad 540p   (i7 SSD + 16GB ram)
Thinkpad 480S   (i7 SSD + 16GB ram)
Thinkpad X250  (i5 SSD + 8GB ram)
Thinkpad T430S (i5 and i7smultiple users) Min 8GB, most have 16GB
Thinkpad T430 (i5 SSD + 16GB ram)
Thinkpad T450s (i7 SSD + 20GB ram)
HP Z220 (i7 SSD + 16GB RAM)
HP Z230 (Xeon 2 stripped samsung EVO 870 500GB SSD + 32GB RAM)
HP Persario, Elite PC (i7, 16GB RAM, SSD)
Dell XPS 8700 (i7 5th gen, 2 stripped samsung EVO 870 500GB SSD, 32GB ram)
Various other i3, and i5 custom built PCs with 8GB ram or more and all have SSDs

STEPS TO REPRODUCE
there are no know specific steps to reproduce this issue. It behaves like when MS Windows has a items in the start menu that points to a network location that no longer is accessible. Lags and waits for timeout, just for an example

ADDITIONAL INFORMATION
I mean no disrespect but all of are workflows are being seriously disrupted. we see no errors (not that we rally know where to dig deep anyway) and have no idea whats going on and have absolutely no way to fix this issue. We are all really weary after making considerable disruptions to peoples lives but migrating to Wildflower and Debian 11/KDE. We have no clue as to when this issue will be resolved or if ever it will be. We are left with little choice but to go back to Debian 11/Cinnamon if there is no timely resolution, because we never had any issues with cinnamon even though have many users using that for 5 years or more. Some users were so frustrated they just went out and bought new Macs because they just could deal with the stress this issue further caused them, obviously not solely related to this issue but still.  Please do anything you can to help. i will provide any information im directed to.