Hi,

I'm having problems with gitk not displaying the history tree correctly. The 
lines representing branches are messed up, circles for the individual commits 
are missing (screenshot attached).

I tried to delete ~/.config/git/gitk, even tried a completely fresh user 
account without success. The strangest thing: in an almost identical 
installation I cannot reproduce the issue.

Arch Linux
$ pacman -Q git tk tcl                                                                                                                                                         
git 2.9.3-1
tk 8.6.6-1
tcl 8.6.6-1

I'm running out of ideas. There is no error reported from gitk. Is there any 
way to turn on more verbose debugging output? Thanks for your help!

Regards
Raimar