does your Thunderbird for deb11 often become unresponsive?

[hlyg]

at first i suspect Thunderbird(TB) try to access some sites that are 
blocked in china

i disable show Start Page when it launches
i disable check email automatically for each account

but it becomes unresponsive when i File->New->Message

i really don't know cause of unresponsiveness

PS: even if blocked sites cause trouble, it's bug of TB, it shall 
timeout after it can't access sites for some time