I have a SharePoint list called "User" with a boolean field called "IsPolicyOwner". The following works on any screen within the app.
Filter(User, UserType="App" && IsPolicyOwner)
What fails is if I create a named formula and then try to filter that formula by the boolan value.
App.Formulas:
fxAppUsers = Filter(User, UserType="App")
On any screen:
Filter(fxAppUsers, IsPolicyOwner)
The result seems to remind me of the old issue querying boolean values. I can use the condition IsPolicyOwner=1 and the filter works and in the process I receive a data type warning. This was the workaround until Microsoft fixed the issue.