[Bug 49758] New: regression: Spitfire Labs VST crashes when trying to switch instruments

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49758

Bug ID: 49758
           Summary: regression: Spitfire Labs VST crashes when trying to
                    switch instruments
           Product: Wine
           Version: 5.16
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

I'm using the Spitfire Labs VST plugin through airwave
(https://github.com/psycha0s/airwave) in native Bitwig Studio 1.3.16.

I upgraded from wine-staging-5.12.1-1 on Arch Linux to Wine Staging 5.15.2-1
and then subsequently Wine 5.16-1 and both latter versions cause the plugin to
freeze and promptly  crash if I try to change the instrument.

The airwave debug log doesn't output anything when that happens even at maximum
log level other than "Child process terminated".

Switching to wine lutris-5.7-8 from the Lutris project alleviates this issue.
Which suggests to me this is a regression that happened somewhere between 5.12
and 5.15 and as stated above affects both main branch and staging.

I'm willing to provide more debug output of course but I could use some advice
on how to extract it, because I'm not getting anything in the airwave-manager
log nor if I run Bitwig Studio from a terminal.