YSFlight: Font glitches in menu items

• YSFlight version: 20181124, (stable)
• OS: Linux, x86_64 (Debian 9.x)

Actual behavior

I use OpenGL1.x version of YSFlight (ysfligh64_gl1) and there are many glitches (including cutting lower parts of such letters as y, q, j, p, etc.) with text fonts in menu items & console output, no matter what font size set in options:

Expected behavior

There should be no such glitches with fonts.