In our forms we are using date-fields and want to disallow dates from the past. Therefore we use the "min"-attribute:

var currentdate = new Date().toISOString().slice(0, 10);
$(".powermail_date").attr("min", currentdate).attr("data-powermail-minimum-message", "Date must be in the future!");

The browser-datepicker are correctly limited, but with keyboard you can type custom dates and then powermail-validation only works, if the year is not the current year probably because of a wrong compare in "isValidationMinimumConfirmed". I think fields with type "date" must be normalized before comparing values.
https://github.com/einpraegsam/powermail/blob/2930f72f2baf5b46f966c9262be2fbb7911e047b/Resources/Private/Build/JavaScript/FormValidation.js#L319-L325

Expected Behavior for min="2022-05-13":

Input "01-01-2021" => NOT allowed input
Input "01-01-2022" => NOT allowed input
Input "31-05-2022" => allowed input

Actual Behavior for min="2022-05-13":

Input "01-01-2021" => NOT allowed input
Input "01-01-2022" => allowed input <-- BUG
Input "31-05-2022" => allowed input

TYPO3: 11.5.10
Powermail: 10.1.0
Tested with different browsers (german format dd.mm.yyyy)