Code Snippets are not working

On VS 2019 (16.11.0) using a fresh installation of Cake for Visual Studio (0.3.0.0):

There is no Cake language in the Snippets Manager
Cake files do not show the "Snippet > Insert Snippet" context menu
c# files do not list the snippets defined in this extension under the "Snippet > Insert Snippet" context menu
expansion in code (e.g. writing arg) does not work at all for cake files
expansion in code (e.g. writing for) does work in c# files, but does not list the defined snippets. (I.e. ckma or ckpa)

cake-build / cake-vs