[TxMt] Usability bug, Subversion bundle (Previous Summaries)

[Fritz Anderson]

Subversion bundle, Commit window.

I wrote a long, long commit message. I decided I wanted to refer to  
an earlier message (so I'd remember what changes happened since the  
last commit). I choose a "Previous Summary" from the menu. The  
message-text area is filled with the historical text.

Expected: I should be able to recover the message I was working on,  
via a control or at least via Undo.

Actual: My work on the message is destroyed.

	-- F