Getting System.Exception: Not supported yet - Call trying to load example plugin for Warhammer: Chaos Gate

[AndreLemay]

Figured I'd post this here instead of as an issue, as I'm not sure if this is just a case of "we haven't gotten to it yet" or an actual bug.

I'm trying to see if I can get BepInEx working with Warhammer 40k: Chaos Gate - Daemonhunters. It's a unity il2cpp game that released earlier this year, so I tried following the "writing a basic plugin" guide and see if I could get it working. The initial run after installing BepInEx seems to work fine, it generates all the files it's supposed to, but when I add in my plugin dll (still just the basic "Plugin is loaded!" logger that comes with the template, no code changes to it) and launch, I get this exception in the console (this is the full LogOutput.txt contents):

[Message: Preloader] BepInEx 6.0.0-be.570 - ChaosGate
[Message: Preloader] BLEEDING EDGE Build #570 from 3febd6a3ba4266fb996e81b27d18b2dcc82ac1e2 at master
[Info   :   BepInEx] System platform: Windows 10 64-bit
[Info   :   BepInEx] Process bitness: 64-bit (x64)
[Info   : Preloader] Running under Unity v2020.2.1
[Info   : Preloader] 0 patcher plugins loaded
[Info   : Preloader] 0 assemblies discovered
[Message:AssemblyPatcher] Executing 0 patch(es)
[Message:   BepInEx] Chainloader initialized
[Fatal  : Preloader] System.Exception: Not supported yet - Call
  at BepInEx.IL2CPP.DetourGenerator.CreateTrampolineFromFunction (System.Byte[] instructionBuffer, System.IntPtr functionPtr, System.IntPtr trampolinePtr, System.Int32 minimumTrampolineLength, System.Runtime.InteropServices.Architecture arch, System.Int32& trampolineLength, System.Int32& jmpLength) [0x0010f] in <9bb57b3c16e94c28932dd5d0432afe93>:0 
  at BepInEx.IL2CPP.Hook.FastNativeDetour.GenerateTrampolineInner (System.Int32& trampolineLength, System.Int32& jmpLength) [0x0012c] in <9bb57b3c16e94c28932dd5d0432afe93>:0 
  at BepInEx.IL2CPP.Hook.FastNativeDetour.GenerateTrampoline (System.Reflection.MethodBase signature) [0x0000e] in <9bb57b3c16e94c28932dd5d0432afe93>:0 
  at BepInEx.IL2CPP.Hook.FastNativeDetour.GenerateTrampoline[T] () [0x0004a] in <9bb57b3c16e94c28932dd5d0432afe93>:0 
  at BepInEx.IL2CPP.Hook.FastNativeDetour.CreateAndApply[T] (System.IntPtr from, T to, T& original, System.Nullable`1[T] callingConvention) [0x0002c] in <9bb57b3c16e94c28932dd5d0432afe93>:0 
  at BepInEx.IL2CPP.IL2CPPChainloader.Initialize (System.String gameExePath) [0x000e4] in <9bb57b3c16e94c28932dd5d0432afe93>:0 
  at BepInEx.IL2CPP.Preloader.Run () [0x00290] in <9bb57b3c16e94c28932dd5d0432afe93>:0 

This is using the latest bleeding edge build (build date June 19th, artifact #570, commit 3febd6a), so what I'm wondering is if this is a bug I should open an issue for, or just something that hasn't been implemented yet.