[structure view] projects disappear from structure view #1677
Description
Sometimes, after adding a project to the workspace, it appears in the structure view, and shortly after, it disappears again and never comes back. Pressing "Reload" doesn't help, the project doesn't show up again.
Other projects that have been showing up in the view before continue to show up.
After restarting VSCode, the missing project comes back to the structure view and everything looks like.
In one testing session, I saw the new project to appear in the structure view for a little while, even though it looked like the classpath of the project was still not complete (saw messages from the Java tooling about downloading dependencies from Maven). Opening the project in the structure reveals no content. And then, once the dependencies were all downloaded, the project disappeared again from the structure view.