the behavior is still buggy, exactly as described in comment #70 a) and b). However, when I reply, I do not get the behavior described in c), but the old incorrect behavior, where From field splits into two addresses:
To: Sureöname
To: Forename Dr. <email address hidden>
Thus, at least for me, it works exactly in the same buggy way as in Thunderbird 1.5.
Adding to comment #75, when I receive an email (thanks Peter) where the comma is encoded as =2C
From: =?iso-8859- 1?Q?Sure= F6name= 2C_Forename_ _Dr=2E? = <email address hidden>
the behavior is still buggy, exactly as described in comment #70 a) and b). However, when I reply, I do not get the behavior described in c), but the old incorrect behavior, where From field splits into two addresses:
To: Sureöname
To: Forename Dr. <email address hidden>
Thus, at least for me, it works exactly in the same buggy way as in Thunderbird 1.5.