in remote X11: xclock works but gitk or git gui do not

Question

I installed a X server on Windows 10, I used the WSL and I noticed an issue

# echo $DISPLAY
localhost:0

When I run xclock or xcalc everything works fine, but when I run gitk I get a segfault

~ # xclock
Warning: Cannot convert string "" to type XftFont
~ # gitk
Segmentation fault (core dumped)
~ #

Is there an issue with this?

I'm using OpenSuse Leap 15.1.

Thanks!