Do not loose focus while reading a mail

[EP78]

When reading a mail on Thunderbird in "incoming" and some new mail(s) are coming, the focus is lost on current mail and select another one (probably at same position in offset, but now another email).

This is really annoying...

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[siffemcon]

You should file a bug report for that at https://bugzilla.mozilla.org/enter_bug.cgi/).