Your admin has updated your settings. Some of your pinned apps may have moved.

I have a client experiencing this same issue.

I have opening up a case with microsoft and have begun looking into it with them. Based on what we find, i will update this thread.

I will say that I expect it to be something bigger than just a setting, the fact that multiple people have been having this issue in the last week all of the sudden seems to point to a back end issue, or a change in something that is perhaps not working right.

Regardless I will do my best to find the problem, and once we have follow up here to try to help everyone else out.

Adam