There are quite few annoying bugs in the mobile/tablet version of the site.
One of the most annoying ones is when I want to upvote a comment the comments is transferred downwards and not upvoted. The same happens when I touch the comment.
Another bug is the inconsistency in the way comments are displayed, the font size varies from one comment to another.
When typing there are random jumps.
I think the mobile/tablet versions need to be more thoroughly tested. Right now the experience is not pleasant at all.