I don't recall seeing this in 12.0.2.0 so I think this may have only started in 12.0.3.0, but may be wrong.
The tab categories are showing duplicates of each category.
rdm-tabcats.png
Hi,
I think I know the problem. I will assign this to Hubert. This is simple fix.
Regards
David Hervieux
Hello,
This issue has been fixed internally and the fix will be available in the next beta version of RDM 12.
Regards,
Hubert Mireault