What you're doing differently than expected is that you're trying to add the MeshFromStrandsNode while component mode in the Edit Guides operator is active. This should work of course, the fact that it doesn't is a bug, so thank you for the report. Until we fix it you'll have to disable component mode in Edit Guides (make sure none of the Edit Strands/Control Points/Brush icons is enabled) when adding MeshFromStrands.
Ivan Kolev (Software Developer, EPHERE Inc.)
E-mail: ivan.kolev at ephere dot com
Discord: ikolev