going from 10.12.3 to 10.12.4 introduced issues - scrambled popup windows

[DisplayLurker]

Exactly the same issue, I just updated to Mac Sierra 10.12.4.

Connected with 3 external displays and a DELL D3100 Dock.

Was perfect 2 days ago, now is horrible.

Word = unusable
Parallels = unusable
MS Windows = unusable
MS Project = unusable
Plus numerous other applications

I hope there is a solution soon, otherwise I'll have to bin the DELL dock using DisplayLink technology at it's heart and use only one external monitor connected directly to Thunderbolt port.

It's a pity because it was/is a wonderful solution which suited my needs and budget. Don't really want to spend $3000 to get a new mac with 4 thunderbolt ports to run 3 external displays.

Thanks.


31449613 (Apple Bug report was submitted successfully).