I noted today in v. 333 that in the Home Ribbon Layers Menu Group dropdown list, one particular layer was listed as visible, but in the Tools Ribbon Layers Menu Group dropdown list, a different layer was shown to be visible. (The Home Ribbon’s Layer dropdown list was correct.)
This appears to be a bug.
Thanks for taking the time to report this.
Is this a regular occurrence? It is not something I have noticed before..
Was the layer visible?
Found the bug, fixed the bug
Released the fix