I'm having trouble adding text via the content block.

If I type directly into the tinyMCE window, on closure it accepts the text but if I copy the text in from any application like simple text even in plain text mode,it won't accept any of the copied text including making changes to old entries stored on the database.

This is a new surprisingly new development. I've checked my CSS theme file even removed it to see if it will work with theme CCS file removed and the problem still remains.

It may be a bug, I don't know but I'm lost as to what to do next.