Hi @renedeutscher,
Thanks for letting us know!
However, I was unable to reproduce the issue with a question mark in a field label. But we have a known issue with unclosed HTML tags, and I recommend you check if there is an unclosed HTML tag in your form. For example, in a field description.
For your reference, I created the following screencast: https://a.supportally.com/v/22mKCp.
In case the issue continues even after reviewing unclosed HTML tags, could you please:
1) Export the form with the issue on WPForms ? Tools ? Export? Then you can share the file via a link, like Google Drive or WeTransfer.
2) Share the System Info details on WPForms ? Tools ? System Info?
That way, we can try to locate the cause of the issue.
Thanks!