The version is 12.2.4 Build(92).
If I select multiple files and click "Open", that works.
If I select a single directory and click "Open", it just takes me into that directory rather than importing anything.
If I select multiple directories and click "Open", it doesn't do anything.
If I select multiple files and folders, it takes the liberty of deselecting the folders from my selection and allows me to proceed importing the files.