Description: brightness slider widget defaults to 'middle' setting regardless of current brightness. E.g., screen brightness can be increased by dragging knob to the right; after a few seconds, knob returns to centre; brightness remains high; knob position does not match brightness.
Ah there has indeed be another change which is causing this again. Fixed in version 3.844, will be available on the alpha channel in 5 minutes ("check for alpha version updates").