Yahoo Mail - Cannot Reply, Forward etc

Well, I don't normally have the need to reply or forward emails, so this may have been going on for a while, but I cannot reply or forward emails in Yahoo Mail. There is simply no button or bar to do this. Compose seems OK though. How frustrating!!!!!! I have had a look and it looks as though a few people have this same problem, but no solutions yet. It is possibly related to Java and an old problem from 2008 or 2009 where the same sort of thing happened where you had to change the mode to plain text. Wow, how bad is that.