Custom styles by data tags: Is this a bug?

[Mohammad]

Loo at Custom styles by data-tags here at tiddlywiki.com

 https://tiddlywiki.com/#Custom%20styles%20by%20data-tags

By instruction there create a tiddler as below

• tag: $:/tags/Stylesheet
• text

[data-tags *="mytest"] .tc-title { color:crimson; }

Now create a tiddler and tag it mytest and title it as  $:/mytitle

The title will be colored in crimson except $:/ why?

--Mohammad

[Birthe C]

Hi Mohammad,

.tc-system-title-prefix is why.

You might not have noticed it before, but it is obvious with coloured titles.

Birthe

[Mohammad]

Hi Birthe,

 Many thanks!  It works!

--Mohammad