Volumetric Fog reprojection causes NaNs after some time

When reprojection is enabled, some NaNs start to appear in the volumetric buffer, it  thens spreads through the reprojection buffer. Stop Nan option doens't work on this reprojection buffer so it doesn't fix the issue either.

 
https://forum.unity.com/threads/we-really-need-a-fix-for-the-black-volumetric-fog-nan-issue.1492763/