The Dasboard menu (left side) suddenly won’t stay open. I can expand it briefly by using the expansion arrow on the menu, but it retracts again quickly. I want it to remain open all of the time.
– deactivating all plugins to see if this resolves the problem? If this works, re-activate the plugins one by one until you find the problematic plugin(s).
– switching to the default theme to rule out any theme-related problems?