STEPS TO REPRODUCE
1. The resolution of the screen is 3840 x 2160
2. Launch iClone 6
3. Navigate to Menu > Edit > Preference > Interface, set "Icon and Font Size" to Large (200%)
4. Close iClone 6 and relaunch it

ACTUAL RESULT
Can't see "Mark In/Out" on Playbar

EXPECTED RESULT
GUI can display correctly on 4K Monitor with 200% font size