The condition for inverting "has" is faulty because "tags" is an array, not a string. I will send a PR with the fix later.
https://github.com/Jermolene/TiddlyWiki5/blob/master/core/modules/filters/has.js#L53-L65 -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/3446ae0a-d739-4a0f-bd97-92dc9a6fdfb3%40googlegroups.com.

