Redirects cannot be configured due to invalid regexp

[Former user]

Chrome reports while adding a new redirect:

Pattern attribute value [A-Za-z0-9\_\-\.\+\!\%\$]+ is not a valid regular expression: Uncaught SyntaxError: Invalid regular expression: /[A-Za-z0-9\_\-\.\+\!\%\$]+/: Invalid escape

It's impossible to enter the form after this.

[SH]

should be fixed in current image - it works for me, so please reopen if it is not working for you