just installed ERPNext v12 and tried to get the “old” custom apps to work. They do load without any issues and can be opened through the awsome bar “Open ”. However, the will not diplays on the main desk, despite the fact that on the “show / hide cards” it appears:
Actually, that was only intermittent, after a few “bench updates” and reloads on the browser the app did show up. Make sure, as mentioned above that the config is good (compare to other custom apps)…