After upgrading from V13 to V17, our UI Builder section is no longer displaying in the back office. The code compiles, and no errors are logged in the logs.
Even if I add an empty section to the AddUmbracoUI(cfg => {}) part of the Program.cs fil;e, that doesn’t show up either.
Has anyone else observed this behaviour?
I don’t use UI Builder, but have you checked the console in developer tools in the browser to see if it is failing to load? Also, have you checked if there are any UI Builder extensions listed in the manifest?
It’s a commercial product, so if you’re stuck you can raise an issue in the issue tracker and HQ may be able to assist:
Justin
Hey Tim 
This might be a red herring, but I had an issue today with dashboards. New website with Umbraco 17.6.0, but we copied a very basic dashboard plugin we had written that works in 17.2.1, but just fell over in 17.6.0. I had to start a new version of the plugin for 17.6.0 following:
and
It could be the plugin needs to be rebuilt for whatever version of Umbraco you are using?
As I said, I could be wrong, but felt it was worth sharing experience of an old plugin no longer working.
Colin