What is the functional difference between Scan and Import when loading up a project?
I have encountered an issue a few times where I Scan a project to load it into the launcher, but it only stays there for a bit before removing itself. I was thinking this was maybe because I tend to Scan things instead of Importing?
To import one project, you need to use the Import button. The Scan button allows you to scan folders recursively and import many projects at once, for example, if you download the official Godot demos repository or the GDQuest demos and want to import its dozens of Godot projects in an instant.
So when using the Scan feature, you need to select a folder than contains subfolders with Godot projects.
That's all I can say about it, I've never had issues with it so I don't know why it behaves like this for you.