User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Build Identifier: 

I have installed the latest update for Mozilla Thunderbird today:
MozillaThunderbird-68.1.1-lp151.2.13.1.x86_64

I have been receiving following message permanently after a new start of
Thunderbird:
Anmeldung auf dem Server imap.gmx.net mit Benutzernamen
"sarah-julia.kriesch@gmx.de" fehlgeschlagen

The communication with the GMX mailserver worked fine before the update.

Reproducible: Always

Steps to Reproduce:
1. Integrate any GMX account into Mozilla Thunderbird
2. Execute the update for Mozilla Thunderbird:
MozillaThunderbird-68.1.1-lp151.2.13.1.x86_64
3. Restart Thunderbird
Actual Results:  
Thunderbird can not communicate with the IMAP server by GMX.

Expected Results:  
I don't receive any error message in Mozilla Thunderbird, that the
communication with the IMAP server by GMX has failed.