Synth sounds completely different during playback, investigating leads to crash

[ok-reza]

Please describe the problem:

Bass sound I audition before playback seems to play normally, during playback it's as if the values/parameters get corrupted for that synth. Changing synth mode is unavailable, it behaves like an FM synth despite being subtractive and I noticed that the osc1 level was at a value of 8042 or so instead of something reasonable like 0 or -12.

Entering osc1 transpose via menu leads to crash.

What is the expected behavior?

Sounds should play as normal, no crashes when poking at parameter shortcuts

When did you start noticing the issue?

today's nightly

Is there a relevant Pull request?

No response

What hardware did you reproduce it with?

OLED

What firmware did you reproduce it with?

Nightly

What is the firmware name:

b50231f

If possible provide the steps to reproduce the issue and upload additional media:

IMG_8576.mov

[m-m-adams]

Please share the file, this is not reproducible in general

[ok-reza]

for 'Commisary New 3' it seems to be related to the sidechain send clip becoming active and affecting the bass where the bass sound gets messed up.
steps:
start playback
launch 3rd row, then after it's launched, launch first row (sidechain send).
enter 3rd row 'faulty circuits', and enter a param shortcut, like osc1 transpose for it to crash

for '8C.Drift 3', the song would simply crash on load or crash during playback.
possible errors related to start up crashes: I023

2.18_nightly_problem songs.zip