I've started a new project and I've copied and pasted in some test files from another project. Normally to include them in the project I'd toggle on the "Show all files" option in the solution explorer. However that isn't working and I can't work out why!
I've updated to the latest version of VS Professional 2019. I've restarted the application and my machine. I've deleted the sln file and rebuilt. I can exclude files - I just can't get them all to show! Below I've attached a screenshot of an empty project with two test files that should be showing but aren't.
Anyone know what I'm doing wrong? :(

