In v2.8, I noted the option to publish linked notes in Joplin Cloud by (logically enough) selecting "publish linked notes". Awesome, I thought that'll come in handy one day.
Fast forward to today. I'm on v2.10.8 on MacOS. The button has disappeared, but I presume (?) that it's simply been incorporated into the publish. However, when I publish and try to click through to one of the linked notes, I get a page that simply says "This linked note has not been published". It has. It's orange on Joplin.