Encryption Service - broken characters

Hello guys, I need help with the problem what i got.
When using the Encryption service and encrypt some data i always got improperly encoded characters.

For example

Code:

<a href="" charset="UTF-8" data-text="<?= $encrypter->encrypt(10) ?>">test</a>

produce

Code:

<a href="" charset="UTF-8" data-text="�c�NK���a�ǃ���:�0��8�m���v��C7��M�Y���v]s*���BL��t��M��Y����<c����I1�1�z�">test</a>

I´m using CI4 rc3 with config set to utf-8,PHP 7.2.26 running on localhost, developing in php storm which encoding is set to utf-8.
I tried output to log, print on screen, insert to db and i always a got broken chars.
Thank you very much for help.