3 level filter amended

I like using @Brian_Radspinner code for 3 level filter problem, but I have a problem with tag sorting not being correct.

My tiddlers have an object-type=demo field rather than search:book in the original code.
I have attached my tiddlers, can this be sorted or is my usage the problem.
tiddlers(8).json (1.8 KB)

I have added a link to the Demo TW site showing example tiddlers here

I have solved the issue with the tag sorting.
Tiddler demo now shows tags and tiddler titles sorted correctly.
I have updated my site accordingly.
New demo tiddler attached for reference. demo.json (583 Bytes)

Changed this line:

<$list variable="getTags" filter="[subfilter<getTids>tags[]sort[title]]">