For reference, Bitwig's MPE editor is extremely similar to their automation editor, but it will snap to each note, and it is overlayed on top of the piano roll. I really like the way they do it
MIDI Polyphonic Expressions are now a MIDI standard. Vital(ium) is a libre plugin that supports this standard, with potentially more to come.
To reproduce: I added an SFZ instrument and added a single MIDI note for preview purposes. I then went to the modulators tab and added ZLFO. Unchanged from default values, I then added one of the outputs of ZLFO to the gain of the SFZ instrument. The first time I click okay, nothing happens, so I add the output again, and then Zrythm crashes. These symptoms are consistent. This test was performed on the master branch, but this issue also occurs on the old gtk4 branch.
NOTE: I only tested this with SocaLabs' SID VST2 plugin on Debian 11 x86_64 with JACK as the audio backend. I am attempting to assign a tringle-shaped LFO to the pulse width modulator on channel 1 of the synth. After I do so, Zrythm completely crashes with no error message.