[orca-list] need explaination why orca stop speaking when application is not responding

[Amir <trend669953 gmail com>]

hi,

sorry if this has been asked before. i am experiencing almost everyday, 
crash with the mozilla applications, thunderbird/firefox. for firefox, 
sometimes just opening the mobile facebook causes crash. i booted up 
this machine, then open firefox, without opening media 
players/email/etc, then go to addressbar and type m.facebook.com, enter, 
and let it load, then silent. but sometimes only. and in linux, at least 
in my system, when an app crashes, especially mozilla applications, no 
way to fix it, the keyboard is locked, press the keys to adjust the 
media volume did nothing, meaning it is locked. but sometimes it still 
speaking, sometimes alt tab away and back to it, it will only read the 
title of the application, but it is hard to get that thing in this pc. 
normally when the app crashes, orca silent. but ctrl+alt+t to open 
terminal works, i know by pressing the backspace key and sonar beeps. 
but that thing will never happen if mozilla applications crashes, only 
power button fixes it. but i think it is not orca's fault, the firefox 
is causing issue i think. So why orca cannot speak if the application 
crashes, does the thing that orca relies on crashes as well? or maybe it 
is happening only on my system?

2gb ram, 2ghz processor, sonar mate 2016.7. orca 3.22.2.






so why orca stop from speaking when applications are not responding?