It is weird TreeView
TreeView shows compress files ?
This problem ONLY for
- I use TrueCyrpt.
- I compress whole disk K: (i do not sure,this is problem)
Other disk is OK. (C: D: E: .......)
See picture.

For whatever reason, this is expected behavior. I remember seing proposed patch to remove them (zip files) from tree view, but i don't think this was merge or option was added to hide zip.
Edit: forum link of the patch https://explorerplusplus.com/forum/viewtopic.php?f=7&t=650
Edit2: according to one of the last answer, this may do the trick as workaround: https://www.sevenforums.com/tutorials/13619-zip-folders-enable-disable-windows-explorer-view.html
Edit3: tested & ok on win10 x64 bit 20h2 french.
As described by pseudo555, this is expected behavior.