UK PostCodes cant be entered after adding UK Card

[Maxmontgelas]

Describe the bug
I have entered a UK card, both the stripes recommended one and also my own one. when it is time to enter the PostCode only letters can be added, We need to be able to enter Numbers and letters for a UK post code.

To Reproduce
Steps to reproduce the behavior:

1. Entering number 4000008260000000 into the cardfield.
2. Try and add M1 3AU into the ZipCode / PostCode
3. we are Blocked from entering the numbers.

Expected behavour
To be able to enter M1 3AU

Smartphone / tablet

• Device: Samsung S23 Ultra
• OS: Android 14
• Package version: 11.3.0
• Flutter version 3.27.1

Additional,

I have switched back and forth from United Kingdon to several other countries and back to UK to see if it kicks in but it does not. Maybe there is something obvious that I need to do? but it's not so obvious to me.