Escaped character showing in Form Title

I have created a test form with the plugin and selected popup as the type. In the title I have added text asking people to subscribe (looks to be the only place I can add text).
Anything with an apostrophe gets an extra escape character (/) added every time the document is saved. At one stage I had 3 escape characters for each apostrophe which all showed up on the form.

When I open the form to edit it the escape characters now show up in the edit Title field.

Any idea why this would be happening? I am using WordPress 5.4.2 asnd yes, I know this isn’t officially supported, but it is also the only way I can see to get Moosend forms on our site.