This appears to be a bug related to: https://bugs.launchpad.net/ubuntu/+source/qt4-x11/+bug/805303
Work around:
1.) install package qt4-qtconfig
2.) using qtconfig change GUI style to something other than default or GTK+ (recommended: oxygen or motif)
3.) start Anki
This appears to be a bug related to: https:/ /bugs.launchpad .net/ubuntu/ +source/ qt4-x11/ +bug/805303
Work around:
1.) install package qt4-qtconfig
2.) using qtconfig change GUI style to something other than default or GTK+ (recommended: oxygen or motif)
3.) start Anki