Thanks for voting and commenting on this bug. Your input in the comments helps us understand how this affects you and how to reproduce this issue.
We fixed numerous subtle bugs in the rescoping process and this has resulted in a significant reduction of this problem in our internal environments. We encourage to upgrade to any of the fix versions mentioned in this ticket and provide feedback if the issues have been resolved.
In addition, take a look at BSERV-Howtoself-serviceanddebugrescopingproblems-051120-0256.pdf or this knowledge article for more information about what exactly has been fixed and ways to further diagnose and fix this class of problems.
Senior Developer - Bitbucket Server