I created a group with different messengers, some of which are real desktop apps (like WhatsApp, Telegram), some are web apps that have been saved with chrome (like Google Messages). A saved this group and put the link into the startup folder (Windows 10). For quite a while that worked, the only app that would not be grouped initially would be the Teams App. (Which also does not close with the group, after being grouped manually) But that is ok. 

Recently the group began to act strangely. Chrome itself will always be grouped on startup into that group, though it was never part of that group. Trying to pull it out of the group, it always snaps back once, then it works. Google Messages will not open with the group anymore, though. I recreated the groups, but this behaviour now sticks. 

I suspect it has something to do with Messages being a saved web app by Chrome. But it was not like that when I first created this group. It may have changed due to some update of Groupy or Chrome. 

Any idea how I can get back to the expected behaviour?