Currently, I'm using Start11 v1.0 with Curtains v1.19.
When I use the "Modern Style" of Start11, the Start menu appears as below.

When I use the "Modern 11 Style" of Start11, the Start menu appears as below.

Is this something that needs to be fixed in Curtains or is this an issue with Start11?
Following is my Windows version

Edit: Added Windows Version and highlighted the software versions.