Thanks, bro! I understand the general problem, but I still don't have a clear idea of how to solve it. You should check the VisuStella plugin documentation you provided to try and understand exactly which classes are being overwritten and causing this behavior issue.
Immediately, I would appreciate it if you could perform a test: In the plugin loading order, could you place my plugin before VisuStella? Even before Core... This way my plugin will be fully loaded. If VisuStella modifies the same classes and the way the menu is designed, this will overwrite the classes to the behavior predicted in VisuStella. Perhaps this will solve it. Reversing the order is also a valid test if the first option doesn't work.
Please post the results here afterwards. Let's try to resolve this conflict together!
Thank you very much for your comment. You always contribute greatly to the improvement of this tool!