As you can see, one of the projects isn’t showing as a link, even if it’s a page itself like all the others.
Trying to discover why this happens, the only hint I’ve seen is that, when opening them on the right sidebar, the unlinked ones appear as “block reference” while the linked ones don’t.
Have you checked that the project not showing as a link is actually a page and not a block? Make sure that the property you are querying is defined in the first block of the page. Maybe that’s it…
The same page opened in the right sidebar by shift-click on the page title itself.
The “block” that opens when I click on the page from the query.
It seems that the query is picking up the properties block by itself and not the page it belongs to, but I can’t tell why this happens in that specific page. I tried deleting and re-creating it, and the same happens.