Great add-on, but a bug after upgrading to TB 6.0.2 Rated 5 out of 5 stars

It is a great add-on, and I use it everyday.

However, after I upgrade TB to 6.0.2. I encounters one bug. When I forward an email, as soon as I type in the 2nd email address at the To/CC field, it cuts off the inline content of the original email (the thread below the immediate inline content is still there.). I concluded that it is the interaction between Signature Switch and TB 6.0.2 because this problem goes away if I turn off Signature Switch. This only happens for forwarding.

I wish that I did not upgrade to TB 6.0.2 (also does not like the fact that 6.0.2 changed some of short-cut key combinations, nor like their new default color theme). However, that's what I' stuck with. Hope there is a quick fix on the way. I can not find where to report bug, so I'm writing a review here.

Thanks.

This review is for a previous version of the add-on (1.6.8).