I’m using Plasma, and after the large update a few days ago, my Opera browser started to just flash down into minimized state for a minuscle moment and then reappear back where it was upon a minimize attempt. This happens when I try to minimize Opera’s window to the task bar from the minimize button in the corner. It happens both in maximized and non-maximized windows. The only way I can minimize Opera is to click on its icon on the taskbar.
Re-install didn’t help. It’s more annoying than debilitating, but I’ll gladly take any ideas on how to solve this.