Wow, so there's another issue there as it is working. 😄
Are you going to release a patch or only next month with a new version?
@Stuart Silvester, this is working for me:
public function _getEssentialCookieNames(): array
{
$appCookie = \IPS\Settings::i()->ntr_CookiePrefix . '_*';
return array( $appCookie );
}
It shouldn't?