Ion-datetime picker behavior

I’m not sure if this is a bug or if I have something configured wrong.
I have a datetime picker that has min and max values and it won’t limit the selection in 12hr format. If I change it to 24hr format, it works as expected. The dates are all in ISO format.

The control is defined as follows:

  displayFormat="DDD MMM D, YYYY hh:mm A"
  pickerFormat="YYYY MMM DD hh:mm A"

If I change pickerFormat=“YYYY MMM DD HH:mm”, it works correctly, but I would like to have it shown in 12hr format.

Here is my system info:

Ionic CLI : 6.10.1 (C:\Users\dan.hooley\AppData\Roaming\npm\node_modules@ionic\cli)
Ionic Framework : @ionic/angular 5.5.2
@angular-devkit/build-angular : 0.1100.6
@angular-devkit/schematics : 11.0.6
@angular/cli : 11.0.6
@ionic/angular-toolkit : 2.3.3


Capacitor CLI : 3.0.0-rc.0
@capacitor/core : 3.0.0-rc.0


cordova-res : 0.15.0
native-run : 1.3.0


NodeJS : v12.18.0 (C:\Program Files\nodejs\node.exe)
npm : 6.14.4
OS : Windows 10

Any input on how to fix this?