Changes are not reflected in the Sidebar when creating or deleting tags outside the Task Editor, until restarting the app

[nekohayo]

Since the GTK4 port:

• If you create a task like test @brand_new_tag via the quick-add bar at the bottom of the task browser, it will not get added to the sidebar until restarting the app. It works correctly if typing the tag within a Task Editor window, so you probably just need to reuse that code.
• Right-click Deleting a tag from the sidebar doesn't have any visible effect after the confirmation dialog (removal throughout the GUI only happens after app restart)

Related: #1016

[SqAtx]

Ha, I came here to report the same thing for Saved Searches. When you delete a saved search:

it's not reflected in the UI until you restart GTG. Both problems can probably be fixed at the same time. If not, let's create a new issue for the saved searches.

[nekohayo]

Indeed, there is another ticket for the saved searches' changes not being saved, @kocio-pl's issue #1048 :)