Bug with List Symbol not showing since Update

hi,
im using Nirvana theme in the last Version 1.6.3.
Since this update, the list stopped working in frontend.
The dotts or circle or numbers are not showing anymore.
In backend its all normal.

I installed another wordpress instance with nirvana theme and here the same bug.
So it must be a theme problem i guess.

Hope you can fix it soon, cause im using lists in nearly every post and they look very ugly now.

Best regards IT Tweak

Website: www.ittweak.de