UPDATE: It was no issue about the deleted/undeleted cookies. I think I discovered a small bug here (shame on me I didnt see this earlier) 😉

I had a simple line break in the message parameter, that cause a “SyntaxError: unterminated string literal”

Changing from:

line1
line2

to something like:

line1<br />line2

… solved the issue for now. But imho I think a textarea field giving the possibility of line breaks should handle this for js 😉

Best regards
Georg