I tried to create a new collection by moving a subcollection to root level.
Rename /WellnessPrograms/B2BCorpWellness/WPEmployers to /
The app accepted this instruction but caused data loss by failing to write the new data and then deleting the original data.
A new Collection did appear in the UI with a blank name, but was not actually present in Firebase.
The UI also displayed a corrupted state, mixing and duplicating project and collection names in different projects.
In this screenshot green and gray are different projects. The green "Prod NEW" project is duplicated 5 times.

Restarting Firefoo did not resolve this condition. I had to unload all Firebase accounts and delete the app Preferences and Saved Application State several times.
I am using v1.5.5 on MacOS Monterey.