Titles are being chopped

Some longer than others. Usually cut in mid letter. Only in Firefox. Windows OK.

 

When I read your ***le I was thinking of the car kind

 

I can't find a tutorial or method for posting an event in the calendar. Please help

 

It only happens when I open a thread. When I go back to the page the following ***les are in a larger font but cut off where the original font ***les ended.