I have 4 screens and one panel on each screen.  The task manager on my main screen's panel has a problem where the bottom half doesn't refresh when the window changes.  For example if I have Chromium open and change to a different tab, only the bottom half of my task manager refreshes.  Same happens when I open or close a window.  Interestingly, this only happens on one of my 4 panels.  It doesn't seem to be a task manager specific problem, but more of a general panel issue, but it's most obvious in the task manager.  But if I put the panel in edit mode and start moving items around, I only see the top half of the item moving.  Once this starts happening, plasma ends up crashing after a bit.  When plasma restarts, the problem is gone, but then the corruption eventually returns and plasma crashes again.

Using task switcher / cover switch / present windows makes it redraw

I originally noticed this with the breeze dark plasma theme, then changed to aya, and it still happens, so doesn't seem to be related to the theme.

I think it started happening after the 5.3.0 or 5.3.1 upgrade.

Reproducible: Always

Steps to Reproduce:
1.  Not sure what triggers it, but it happens every time if I use the computer long enough
2.  On my panel I have launcher menu, app launchers, task manager, pager, system load, system tray, clock, and show desktop button.  See screenshot for panel layout.

Actual Results:  
After using the computer for some time, bottom half of panel stops redrawing and then plasma eventually crashes