[t123thomas]

@t123thomas 

I am not very familiar with Python but so much I know, no hyphen should be used in a name at Pyhton. (emby-next-gen)

As a test, I also rewritten "plugin.video.emby-next-gen-5.3.1" in "plugin.video.emby_next_gen-5.3.1". (exactly 142 changes)
So I was able to integrate it without error in SHS.  

Result:
Smart Shortcut does not work with "plugin.video.emby-next-gen", no idea what has been changed in this addon.

@Fuchs2468, I relayed your comment and even share this link with developer of emby-next-gen, in his response it appear that logic have been deleted from the his addon hence to repair the codes,
could you please provide the locations specific areas in the Titan skin which drives the SMARTSHORTCUT and SUBMENU so I can have the developer to troubleshoot where his logic have missed these codes.
Thanks