掲示板 Forums - Broken link to Experimental Forum from the Settings

In my Settings/Experimental, there is a blurb at the top:

This is experimental, and may break parts of renshuu. Only for adventure-seekers! Any issues should be reported in the Experimental forum.

When I left-click on it (in desktop browser), I get an error page that says:

Sorry, the page that you were looking for could not be found. Please use the menu above to access the areas of the site.
Page accessed: https://app.renshuu.org/forums/15/&ajax=true&removeQuiz=true&src_stamp=1745994900

(I didn't know how to paste the full text of the link without making it clickable, but it isn't clickable on the error page. When I tried pasting in plain text, it truncated the URL.)

If I middle-click from the Settings to open it in a new tab, though, it brings me to the Experimental forum just fine.

This only seems to happen when the "Global" server is selected.