"Run-Time Check Failure #0-The value of ESP was not properly saved across a function call" in Plugin

I'm getting this error when using the native audio plugin demo from the Unity Repo, when I build it for Windows Store. I'm trying to use a custom audio spatializer for my HoloLens/WinMixedReality App.

I can only work around it when disabling the debugger message for this exception (then the app starts "normal"), but this is obviously not a solution outside of the debugging environment.

There have been serveral other posts about this (suggesting a missing __stdcall for the called function or so), but they don't really help me since Unity Engine calls those functions(and what functions anyway)? I might still be missing something here, or is this a bug in the audio plugin API?

I'd appreciate any help with this. Thank you!

Here is some callstack information. My Unity Version is Version 2017.2.0b2

 

Thank you andrew, I filed the bug report including the project and repro steps.
https://fogbugz.unity3d.com/default.asp?935370_v8iuomsf0a3e2is7

 

So the bug report team claims:

I can reproduce this, the app starts up nicely and without breaking into any exceptions, however a few further tests showed that the native audio plugin is not even called in Master build. (E.g. i tried not returning output data from the plugin or switching the channels from left to right. Debug build had the changed audio behaviour, while Master build didn't.)

I'm not super experienced with the build procedure of unity and UWP, but do I have to rebuild the plugin for Release so it can be called in the Master build? Or is this more of another bug and should work with the same DLL anyway? (kind of how it does in Release build of the app, only that i cannot step over the exception.) Do you guys have any idea what to make of this?