There seems to be an issue with BlacklistsPaths accidentally filtering out new or modified assets regardless if they are in the blacklisted path or not.
Project repro has been attached.
Steps to Reproduce
Result:
The file "BP_SaveAsset" will now be hidden, requiring a refresh of the content browser to be visible again.
Expected:
The file "BP_SaveAsset" should not become hidden while having a FBlacklistPaths Filter
Note: If "View Options->Content/Show Filtered Folders" is selected, the asset will not be hidden when saving. The only difference being if the folder in step 2 is blacklisted or not.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-94329 in the post.