@Szkieuko
Hi, this seems to be a different issue, the bug was mostly on the print button at Gmail and other pages with JavaScript.
Please report it to the bug tracker, I can confirm the report internally.
For information on how to report a bug, see this URL: https://vvld.in/how-to-report-bugs
Once that is done, please share the bug number (beginning with VB-).
Add your vivaldi.net username. Thanks.
On the form, you can add your email address. Once submitted, you'll get a confirmation. You can reply to this with any logs or further info.
Cheers, mib