horizontal scrollbar on source list

[sssoleileraaa]

Description

A source list with a vertical scroll bar also now has a horizontal scroll bar.

STR

1. NUM_SOURCES=11 make dev
2. run the client

Expected

For a vertical scrollbar to appear without a horizontal scrollbar

Actual

A horizontal scrollbar appears

[redshiftzero]

just checked, I do see a horizontal scrollbar - this could be a good one for you @ntoll