Dead screen?
That looks unhealthy to me. I would open a support ticket; you might need a replacement screen!
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Yep, looks dead to me 
If it was larger blocks I might think it was a bad solder connection but the single lines in separate spaces point to dead drivers in the display. It could be bad internal connections on the OLED you(or myself) can’t fix. Either way, you probably have to get it replaced.
HI concur. I’ve seen this before & it does need to be sent to Elektron to be remedied.