EDIT: 8/14/2025 Still happening at version 3.5.2.
I'm seeing an error with ArcGIS Pro 3.X where a black box or boxes appears on the screen in the following conditions.
The problem is that when ArcGIS Pro is open but minimized to the task bar, and if there is a map, table, or tool separated from the main ArcGIS Pro window, then that separated window(s) may pop-up as a black rectangle while ArcGIS Pro is still minimized in the Windows taskbar. ESRI has not had other complaints about this. The issue may be that the black box appears while ArcGIS Pro is minimized, so that users may not realize that it is caused by ArcGIS Pro. To clear the black box(es) just restore ArcGIS Pro to full size.
It may look something like this.
If you have seen this black box problem:
If you haven't seen this problem but would like to help, please do the following test.
Testing Steps
Please comment and let me know if you see the black box appear in your testing along with what version of ArcGIS Pro you are using.
I'm currently using the latest ArcGIS Pro 3.1.3 on all of my PC's. I have a case open for this problem with ESRI Tech Support but they are having trouble reproducing it. I'm seeing the problem on three different PC's, two Windows 10 PC's from 2017 and one Windows 11 PC from 2022.
Thanks. That looks like the same problem.