[orca-list] Text selection in Thunderbird compose/reply dialog working wrong after latest change

[Hammer Attila <hammera pickup hu>]

Hi Joanie,

A testcase with producing problems in Thunderbird compose new message 
dialog the message body when text selection happening:
1. Press CTRL+N keystroke, and jump the message body with tab key.
2. The first line type the hello hello1 text, the second line with 
hello2 text, and the third line with hello3 text.
3. Press CTRL+HOME keystroke and press three time with SHIFT+DOWN arrow 
keystroke. First time Orca wonderful spokening the three line with selected.
4. Press one time the up arrow keystroke to jump top of the message body.
5. Final repeat the three shift+down keystroke to again selecting the 
three line. This situation happening following:
1. The first shift+DOWN arrow key press Orca saying hello2 hello3 text 
and the selection state message (not selected message). Expected result 
this situation to Orca spokening the first selected line and proper 
selection state message (selected message).
2. The second and third shift+down arrow keystroke Orca saying proper 
line with selected and right selection state message.

This is known issue with latest change related, or I file a new bug and 
attach a debug.out file?

Attila