Problem description

xcalc and xmessage emit the following errors if used with termux-x11, but seem to work normally in TigerVNC (see termux/termux-packages#23002 (comment)):

Warning: Unable to load any usable ISO8859 font
Error: Aborting: no font found

What steps will reproduce the bug?

termux-x11 :0 &
export DISPLAY=:0
xcalc &
xmessage "Hello, world!" &

What is the expected behavior?

xcalc and xmessage should appear in the Termux X11 app.