Sign in with email trouble

[maxomous80]

The "Sign in with email" process leads to an unwanted and unpredictable issue.
The time between the hit of the submit button and the ending of the operation, the submit button remain clickable and this could lead to receiving error message, due to user double click.

This behavior has been erroneously identified as a bug during iOS Apple Store verification, considering it an issue regarding "Guideline 2.1 - Performance - App Completeness".

Steps to reproduce:

start the app
hit 'Sign in with email' button
enter email
enter name
enter password
submit
In the meanwhile, hit the submit button once again

Expected behavior:
app creates correctly a new firebase user with the updated credentials
app show an error message (in our case, app did not recognize the password field is over 6 characters long), causing the user to believe that the registration process has not been completed