I am puzzled as to why the post appeared in the VPX forum - I definitely put it in the MEP patch topic. Since posting the above I have had the same thing happen twice, one I caught quickly, the other not. Makes me wonder if there is an issue with Firefox when multiple tabs are open - I have been having other unrelated issues with FF Quantum 65.0.2 (64 bit).
I have not tested the project in VPX, it has been a pain trying to get it finished in MEP - it is not that complicated a project, however I am already up to version 12 of it and currently it is stable in MEP so do not want to risk it yet in VPX.
Please see this thread for the updated bug list. There have been negative comments with all of the patch threads started by Mathias, and many more threads started by others raising bug issues. Getting some action from Magix on the main ones has been an exercise in frustration. I have submitted multiple tickets with the list, compiled with the help of other users, updated each time and I have received replies that Magix is working on these. However, 6 months for some of these is far too long. Please shake up the developers.
Denial of the use of Xara and the external audio editors with VPX is not acceptable.