Your most infuriating bug report ?

Mine is easy to list. A serious noticeable regression in the debugger.
The debugger simply doesnt work as expected and the more I work the more infuriated I get that this bug has existed for over 2 years now

Voting for it hasnt gotten it fixed. And there are other similar bugs that seem related (like step not behaving a expected (

Whats YOUR most important bug report for Xojo to fix ?
Bug – not feature request