Ya I add the / instead of blank and the url changes to ubbthreads.php and I lose css etc..
did you update/rebuild the cache after the change
do you have custom (or any) forwarding scripts unrelated to UBB.threads. Anything such as an .htaccess file or whatever Windows / your apache server uses to redirect.
have you tried using FULL URL, as the configuration setting describes?
stock code:
<input type="hidden" name="curl" value="{$current_url}" />
your output code:
<input type="hidden" name="curl" value="%2F%2Fwww.mshastro.com%2F" />
%2F is a /
So what you are looking at is your browser converting your entry with the slashes from html special characters to html friendly characters
https://www.w3schools.com/tags/ref_urlencode.ASPedit:
this is fine, because it gets decoded back special chars when it is used. though I am looking at your output and wondering why it reads as "//www.mshastro.com/". This is url without a protocol. It is not html5 spec. choose http or https for the protocol.