Comment 2 for bug 1792146

Scrolling menu should be fine as long as it works. Hardcoded limits are always suspicious. I don't know if anyone ever needs more than 200, but who knows? I can't come up with any reasonable solution for all possible situations, though, so I can't complain.

BTW, what's the limit in pcbnew and how it's handled? There could be more than 20 if there are many inner layers.