I'm also having this issue but this time with the "Status field
Is this a classic or a next-gen project? Classic
What is the type of the project (Software, Business, Service Desk)? Software
What is the type of the custom field? Not a Custom field - this is the "Status" fieldAre you the only user facing this issue? No
Would it be possible testing using incognito mode or other browsers? I use Chrome but not possible to use incognito. The field appears while the issue is loading in the right panel for a moment and then disappears