I'm on Android, and the mobile version's 'show more comments' link on a SO question is not working.
Browser: Dolphin 9.3.1 + Jetpack 2.0
We only support the default browsers on mobile devices, and I've failed to reproduce this problem on any of them.
It's not practical for us to support all browser unfortunately, it's just too much effort for too few users.
Found out that the problem was that the plugin Jetpack 2.0 was somehow preventing the click on the link. The show more comments link worked after I uninstalled the plugin.