This is probably not a bug I'm reporting. It's more likely a misconfiguration in my Privatebit or my YOURLS - I'm not sure which one. I have also posted about this in the YOURLS user forum at https://discourse.yourls.org/t/how-do-i-call-the-yourls-api-from-a-privatebin-instance/377

I'm using an API call to YOURLS to enable URL shortening in my Privatebin instance.
In my Privatebin’s conf.php, I have the API call to YOURLS defined as:

urlshortener = “https://t25b.xyz/yourls-api.php?signature=xxxxxxxxxx&action=shorturl&format=json&url=”

I have Privatebin at https://t25b.com and YOURLS at https://t25b.xyz. They are both hosted on the same server and the same IP address.

When Privatebin makes the API call to YOURLS, YOURL is indeed correctly registering a short URL from the Pastebin long URL, but instead of the short URL being placed in the Pastebin page in replacement of the long URL, it is being displayed in a new tab of my browser. Plus, the ‘Shorten URL’ button on the Pastebin instance is remaining enabled and I can generate another short URL (which is also displayed in a new tab).

That is not the intended outcome, but I haven’t managed to figure out what the problem is, and whether it’s in my Pastebin configuration or my YOURLS configuration, or whether it's a bug.

The behavior can be seen now on the sites above.

If it's my configuration error, would you have any tips or solutions?
Thanks in advance if so.