Quote Originally Posted by rdenney View Post
Maybe you inadvertently switched to the mobile skin. There is a selection in the lower left corner:

The default choice yields the desktop skin, even on an iPhone:

But you can change it to the (barely supported) mobile skin:

I am sure the forum does not do that automatically, but many forums using vBulletin do.

Rick “never underestimating what damage one misplaced bit can do” Denney
In my case no, I simply go from the tab for the forum to other tabs and sometimes when I return to the forum tab the type is blown up.