HELP: Random black boxes appeared on document that shouldn't be there.

[kaitd14071978]

I have been working on some documents and haven't had any problems with them at all. I went to open both of the documents and they have black boxes fixed to the page that I can't seem to get rid of. They weren't placed there and I try to copy and paste the pages, but it brings those boxes over with it. If I export the documents, they are still present. Any possible ways of troubleshooting this would be great!

[kaitd14071978]

UPDATE: I have found other pages that helped troubleshoot this. The problem has been solved!

[Geоrge]

Tell us what you find and how you fix please. For the future readers!

[Laubender · Accepted solution]

My guess what happened:

Unwanted black bars on pages and pdf
mautime, Aug 28, 2020
https://community.adobe.com/t5/indesign/unwanted-black-bars-on-pages-and-pdf/td-p/11394994?page=1

Vote for fixing that bug in InDesign 15.1.2:

https://indesign.uservoice.com/forums/601180-adobe-indesign-bugs/suggestions/41275063-underline-with...

Regards,
Uwe Laubender

( ACP )