Text input field changes colors

I often experience that the text input field changes to white, it is both android and ios. And under all live test it have been black. I just tryed it today with the published app. 1 customer was writing with white text color and 3 other customers was writing with black text color in the exact same login screen and field. All on the iphone X or 11
Have anybody else tryed this??? And what can I do.
Dont know if it can be the same problem because he could not log in on the hes phone in my app.! In this picture you see it. All other app works fine with black text all over…

I’m having text input trouble too (trouble that is recent and which previously worked okay). I’m wondering if there has been an update to this component to cause unexpected/unwanted results.

Doesn’t anyone have a reply to this??