I can confirm this bug.
I reconfigured my gnome gpg settings in system->preferences->encryption and set "do not remember password".
Since then enigmail asked everytime I opened a mail though I set "remember for 5 min" in enigmail prefs.
Now I reset that the option in gnome->preferences->encryption to 20min, I works again with enigmail.
I would expect enigmail to either ignore the gnome settings or
alert me of this setting being in place and overriding the engimail setting.
I can confirm this bug. >preferences- >encryption and set "do not remember password". preferences- >encryption to 20min, I works again with enigmail.
I reconfigured my gnome gpg settings in system-
Since then enigmail asked everytime I opened a mail though I set "remember for 5 min" in enigmail prefs.
Now I reset that the option in gnome->
I would expect enigmail to either ignore the gnome settings or
alert me of this setting being in place and overriding the engimail setting.