'Vibrato' 'Sustain' display incomplete on OPL instrument, regardless resizing instrument editor.

[gtr3qq]

It's a minor graphical glitch first notice on v0.6.3, still persists in current code base.

This is from v0.6.3, untwek-ified win64 release, running at windowed mode , 1920x1080.

This is the current codebase.

Thank you for your time and your amazing tracker.