I noticed the same problems with Dolphin browser too, in both the latest version and the older beta version, and I noticed it wasn't exclusively to this site. As much as I like Dolphin browser I find myself using Chrome to access TSD, it seems to work much better here, especially after the upgrade. Truth be told, I've never really found any Android browser that really wowed me, and I've tried them all, but Dolphin is what I like and use most due to the strength of the add-ons available.
Browser issue. Nothing to be done on our end. Also, simply googling the issue (ie - Dolphin browser) with the word xenforo, will generally bring up discussions and you can see for yourself if there is anything we need to do. This version of xenforo has been out awhile. Plenty of feedback on most issues as xenforo is a very active community.