[MlMt] Cursor placement in replies

[John D. Muccigrosso]

I'm seeing a weird new thing:

Replying to messages with some selected text, the cursor ends up at the 
start of the first line of the signature for one of my signatures, not 
above it as it used to and still does for my other signatures.

The signature is not tied to an account and it has multiple lines, but 
if I shorten it to one line, I still get the behavior.

Plain text composition.

John