gitk / git-gui and Tk 8.5 don't play nice together
From: Kevin Williams <hidden> Date: 2016-06-15 22:44:01
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 152 (RENDER)
Minor opcode of failed request: 4 (RenderCreatePicture)
Serial number of failed request: 541
Current serial number in output stream: 549
Is this a known issue? Do I need to file a bug report or something?