I have an Amiga 1200 with a Blizzard 1260 expansion board, 128 MB of memory. OS 3.0.
To rule out most things I tried booting with no startup-sequence, just ran "setpatch" to load the 680x0 library required by ixemul.library, and then started adom. The problem is still there.
The font would be the default Topaz 8. Kickstart 39.106, Workbench 40.42, ixemul.library 48.3.
Try setting the font to topaz 8, at least the letter 'g' in that font should have graphics on the bottom line. I could try to create a simple WinUAE image to test with but alas, I am not running Windows on any system right now.