Normalizing problem

If I want to normalise a file I have the option to choose stereo-link or mono mix. With the stereo link all works good and as expected but mono mix in former versions (before 11) created a new mono file with the chosen level. Since WL 11 the mono mix works inside the file, it stays a two channel file and normalises to a much too high and distorting level (WaveLab 11.1/ Macbook Pro/ M1 Pro/ Monterey 12.4).
I made this post already in the German forum but no-one answered.
There is a problem with plug-ins from PSP that are not loaded although they are 64 bit.

Indeed, there is a problem. This will hopefully be fixed for 11.1.10.
Thanks for your report.