Hi @Anonymous,
Could you please share a bit more about your SP list?
Do you use the admin column to store the email address within your SP list?
I have made a test on my side, and don't have the issue that you mentioned. The screenshot as below:
Set the OnStart property of the first screen of my app to following:
If(
IsBlank(LookUp('20181022_case12_Administrators',User().Email in Admin)),
Navigate(ScreenUsers,ScreenTransition.Fade),
Navigate(ScreenAdministrators,ScreenTransition.Cover)
)
On your side, please modify your formula as below:
If(
IsBlank(LookUp(Administrators;User().Email in admin));
Navigate(ScreenUsers;Fade);
Navigate(ScreenAdministrators;Fade)
)
then check if the issue is solved.
In addition, you could also consider take a try to type above formula within the OnVisible property of the first screen of your app instead of OnStart property, then check if the issue still exists.
If the issue still exists, please take a try to turn off/disable the "Delayed load" option within Advanced settings of App settings, then check if the issue is solved.
Best regards,
Kris