This is how the Desktop Folder Settings window comes up on my machine:
https://1drv.ms/u/s!Avv04SyB_Fr_ltUyA06Zb3wNP6NCvw

I accidentally added a new path and couldn't figure out how to delete until I realised the delete icon was hidden.
Potential solutions could be:
- to make sure the windows is always big enough to show all entries
- a scrollbar at the bottom of the path window
- put the icon directly behind the text

Other observations:
The huge space between the two entries looks odd?
These wallpaper slideshow settings get lost for my second monitor whenever switching from docked to undocked and back.

Operating System: Manjaro Linux
KDE Plasma Version: 5.14.5
Qt Version: 5.12.0
KDE Frameworks Version: 5.53.0
Kernel Version: 4.20.1-1-MANJARO