It seems that the bot does not correctly identify the second option where one can receive "Es wurden keine freien Termine in Ihrer Region gefunden. Bitte probieren Sie es später erneut." case.
The screenshot below is accompanied by
INFO ReportJob - Found free seats in location 74081 Heilbronn:https://002-iz.impfterminservice.de/impftermine/service?plz=74081
Five minutes left to send the sms verification
in the log.

It seems to me that for some reason https://github.com/TobseF/impf-bot/blob/master/src/main/kotlin/de/tfr/impf/ReportJob.kt#L239 does not trigger anymore and it just continues on and waits for the user interaction (which allows reclicking "Schnellprüfung durchführen" but I have yet to see this change the response.
My kotlin and selenium foo is not strong enough to track down why only one of the two isFull works correctly...