Blend Weight do not work anymore in Post Processing Volumes. UE 4.11.2

Since I do not know which JIRA that was entered actually fixed the issue during the 4.12 preview releases or if a specific JIRA actually was entered I only have a best guess with UE-30565 being the one to likely fix your issue. I posted the info below but I don’t have the direct Git commit link. Sorry.

UE-30565 - fix CL-3023490 for merge to Main (4.12 release merge CL-2974680)

Keep in mind that I do not guarantee this is a fix for your issue and if it’s not this CL then I’m not exactly sure where the fix was made.