Serious Flaw with latest update V2.4.0!!

After updating the Threema app to V2.4.0, I opened it and it showed me a message that it is updating the database. So far ok but what happened next is unacceptable: Instead of asking for my passcode or fingerprint, Threema just opened up without any further interaction and provided access to all stored conversation data!!

chrisd7 about Threema. The Secure Messenger