Currently, error message on TextField ellipsis when it overflows.
There's no solid way to specify error message Text behavior like max lines and the TextOverflow type.

Specifying max lines could be done by wrapping the TextField in a DefaultTextStyle widget, but ideally there should be a way to specify behavior for error text/helper text

code:
https://github.com/flutter/flutter/blob/master/packages/flutter/lib/src/material/input_decorator.dart#L345