XnView Software

You're Welcome ...

Not being a developer, I may only guess ...

First, I don't believe that the missing thumbnail refresh, and the tree refresh are coming from the same bug.
Probably it is better if you open a new thread specific to the tree refresh problem giving detailed information there,
and how to reproduce, in ...

Hi all,
The only thing that works is clean "ALL" metadata and do Metadata/EXIF rebuild thumbnail.
Note that cleaning "ONLY" the EXIF thumbnail and recreating it, is not enough.
I did not do a Metadata Clean one element at a time to see if a specific category is the culprit.
Maybe I will try this ...

Much time has passed since this bug has been reported.
I don't know if it is the same issue, but I experience the very same behavior using latest version.
I tried:
- Rebuild thumbnails
- Metadata/Exif rebuild thumbnail
- Clear cache
. Disable/Enable cache
- Disable/Enable Use embedded thumbnails ...