Yeah, I mentioned it in the pull request, however it works for me, that's why I decided to release it.

I have no problem with the dataconnection in the Events View (as of now) and everything works just like before.

EDIT:
The way it is handled in DataConnection.qml has now changed and I don't have the time to investigate it further. If anyone has any problems, they have to wait. I am not experiencing any problems, so I didn't see any reason not to share my work (with a big pre-release warning on Github ).

EDIT 2:
That being said, the mobile connection switch sometimes didn't work for me even in U13 (with your patch), so it likely wasn't a definite fix. I see that Jolla itself is making changes towards universal use (for the new Events View).