Issue with display after opening lid

I have an issue with my APO. It’s updated to the latest firmware version.
When I reset the oven (switch off electricity, wait 30s and then switch back on) the display is working correctly. However, after I open the lid, the display doesn’t show the numbers anymore. The icons are working fine (e.g. start/stop button, timer icon), but the time itself or temperature isn’t working anymore.

Anyone else have this issue after updating firmware?

I am having the same issue.