Version 8.2.1233 - Anyone having trouble un-hiding folders?
When I check the “Hide” box, the folder is hidden and the checkmark is added, but once it is added to the “More” folder, the folder cannot be un-checked.
No I have personally not experienced that issue in the Windows with the same version. Sounds like a program related issue with your current version and maybe just needs a reinstall.
I would first backup eM Client via “Menu / Backup” and then uninstall eM Client and “Dont delete the database” on uninstall when asked.
Then try reinstalling your current version and try again, or maybe d/l the latest version 8.2.1237 and install that to see if that fixed it.