Created attachment 155775 [details]
example of the hardships of moving the slider

SUMMARY

STEPS TO REPRODUCE
1. Open KDE partition manager.
2. Click on a partition and choose `Partition` -> `Move/Resize`.
3. Drag right handle to resize partition.

OBSERVED RESULT
It's very hard to drag right handle because the cursor must be precisely placed at 1px border.
(see attached gif)

EXPECTED RESULT
Easier dragging handles. Following method could be used:
-  Snap cursor near right handle
- Give large margin of error to right handle (e.g: 20px)

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 22.04
KDE Plasma Version: 5.24.7
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.3