Commerce: Unchecking registerUserOnOrderComplete doesn't work

[gijsstegehuis]

Description

CartController's actionUpdateCart() doesn't allow unchecking registerUserOnOrderComplete option.

see this line:
https://github.com/craftcms/commerce/blob/3.1/src/controllers/CartController.php#L200

Is there some other way to achieve this?

Additional info

• Craft version: 3.4.6.1
• PHP version: 7.3.14
• Database driver & version: -
• Plugins & versions: -

[lukeholder]

Thanks for reporting. Will fix.

[lukeholder]

This has been fixed in 353d4a4da8c7f95591700d0dd706d11dad45da5d and will be included in the 3.1 release.

To unset the registerUserOnOrderComplete you will be able to pass the value of false in a hidden input.

<label for="registerUserOnOrderComplete">
  <input type="hidden" name="registerUserOnOrderComplete" value="false"/>
  <input type="checkbox" id="registerUserOnOrderComplete" name="registerUserOnOrderComplete" value="1" /> {{ "Register me for a user account"|t }}
</label>