with Android it is not possible to set focus in field.
If you have a look also on the example page from ionic: https://ionicframework.com/docs/components/#floating-labels there it is also not working.
with iOS Setup:
with Android Setup:
So I can set the focus one times, you see it with the mouse “there I’m clicking” the focus comes not back.
The same behaviour I have of course also directly on the device.
I hope someone can help me.