[orca-list] Composing HTML messages is a problem in recent Thunderbird

[Jean-Philippe MENGUAL <jpmengual hypra fr>]

Hi,
master and thunderbirdnightly
1. Compose a new message in html (eg, reply to or create a new message). 
The setting of Thunderbird is to write the message a an html one. I also 
am experiencing in text messages, but not 100% reproductible it seems
2. Write some characters in the message body.

Exptcted tesult: orca should speak the work while I press space key, and 
when I backspace, speak the character I am removing.

Actual result: Orca says nothing while I write, and when I remove a 
character, speaks all the paragraph.

My log: https://people.debian.org/~jpmengual/debugth.out

What kind of change may generate this in Thunderbird? I can report bug 
if needed.

Regards