Hung notes on legato notes when using expression maps w/ Acoustic Feedback

I know this has been posted about before about SINE, but it happens with almost all libraries here, and C15 is my first time finally using Expression Maps:

I’m getting hung notes all the time on both legato and sometimes non-legato long notes when adding/moving/drawing in the Piano Roll/Key Editor with Acoustic Feedback on, in C15.

Previous suggestion which does not work for me: I have a blank slot as the default/first on all the maps I use (I also tried using a keyswitch for the default slot that’s way higher than anything in the instruments), so that’s not the issue. Happens more in some libraries than others, but in the vast majority, in both Kontakt 8 and the most recent Sforzando.

Does anyone have a way to fix this/a fast workaround? It makes working with Expression Maps a moot point for me.