The Bug I’m experiencing:
When I created a new project and wanted to add a field used team-wide, I could not see it in the list of existing fields to add before I typed its name in the search bar above the list.
Browser version: Google Chrome Version 91.0.4472.77 (Official Build) (64-bit)
If so, the list displayed there is not meant to be a complete list of your organizational fields; as it says in the header, it shows “Recent fields” only.