https://one.workfront.com/s/article/Workfront-Some-pages-in-Workfront-have-a-black-background suggests it's also linked to the Acrobat extension. Support pointed us to https://support.apple.com/en-us/HT208976 for resolving on the Macs.

We had this issue yesterday with one of our people. If you go to Start Menu>Settings>Personalization>Colors and turn off dark mode for apps it should fix it.

I had a user complain about this also. It is very easy to put the time in the wrong day now.

On ours we have them load a CSV file that it watches for.