vfx mesh behavior fix requests

Trying to make a VFX mesh for a mod, but have problematic behaviors with fog,shadow,shader,stencil. In MW.exe+mgexe these don't occur, and would be nice if i could use the same NIF in both MW.exe and OpenMW.exe without different behavior

Description of problems here: https://drive.google.com/file/d/1enmdIM2YxDpUY9JE3TQprPlw_DImq0fH/view?usp=share_link

video showing the problems: https://youtu.be/ZCj3siTrnUE

file to replicate: enable .esp, - mesh is placed on balmora square and in mages guild. https://drive.google.com/file/d/131AHHB5Pz3Hq1bGDES7aZSmsHEoFa8ar/view?usp=share_link

Would be nice to have a common fix for these, so future vfx meshes (eg. portals, environment or spell effects wouldn't have the same problem).

tried in openmw latest dev build, windows 10 Thanks!