Hi,
We're unable to reproduce this issue in standalone mode, you seem locked with an unstable state.
In order to restore it, could you please try to delete the following files located in /Library/Arturia/Oberheim SEM V/ :
- lastpresetc.pref
- lastpresetp.pref
- plugin.pref
- standalone.pref
then try to restart the standalone ?
Let us know if it changes anything.
Best