This is a common bug in Kde.
Here, what you'll see is a scrollbar at the right of the Desktop.
So, as you scroll; the folders and files will move along and on top of that annoyance you can't click upon the folders.
To fix it
follow these steps
systemsettings --> (under appreance)WorkspaceTheme--> Look and feel --> Check the 'use Desktop laytout from theme' and hit apply'
Do not delete the kde configs in the first place, the above method will fix it.
open terminal and type-in
systemsettings5
Now, Everything's Done and You're good to go.