My Samsung Galaxy S21 has suddenly decided that when I rotate the phone between portrait and landscape mode, it won't rotate its display unless I touch the soft-button which briefly appears.
How can I restore the previous behaviour where it just rotates the display automatically? The problem isn't application specific: it happens whatever I'm displaying. I can't find anything relevant in Settings other than an option to switch off display rotation altogether.
Software version is One UI 5.1 Android 13, and it was recently updated, which might be the cause of the problem.