A light module whose name contains dots, e.g. foo-bar-6.2 does not get its decoration applied in spite of dot being a valid character for folder names in all major operating systems. Our documentation actually mentions that some special characters should be avoided when creating light modules but perhaps with dot we could be more forgiving? I was puzzled at first as to why my decorations were not picked up and took me some debugging to figure out the reason - afraid some customers could stumble into the same troubles.
https://docs.magnolia-cms.com/product-docs/Modules/Light-modules.html#_creating_a_light_module_with_magnolia_cli

PR is provided.