VS Code - Multi-root workspace not showing all git repositories in source control panel

Question

I have a multi-root workspace set up where all of the folders in my workspace are git repositories.

However, for some reason only some of them show up in the Source Control panel, even though I've added them all to the workspace in the same way (File > Add Folder to Workspace).

How do I get all of the repositories to show up in the Source Control panel?

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This is what my workspace looks like:

This is what my source control looks like:

Answer 1

I just had this happen to me, but for a different reason. I had three repos but only two showed up on the GIT tab:

Just on a hunch, I right clicked in the source control area on the left VSCode panel, then clicked the "Repositories" option in the drop-down menu and saw that the repo in question wasn't selected:

Once I selected the "interfaces" repo in the drop-down menu (so that it was checked), it then appeared in the source control area.

I've been using multi-root workspaces for a while and this never happened to me before, so I don't know what I did to cause it, but it's an easy thing to check for.