Although the current behaviour is confusing, we can’t change it without 
breaking backwards compatibility. I’ve updated the docs to include a note 
pointing out a workaround:

> Note that if a tiddler does not contain field <<.place F>>, it is treated as 
> if the value of the field were empty. Thus, a filter expression such as 
> `[each[color]]` will return one tiddler that doesn't have a `color` field. To 
> obtain just the tiddlers that have a non-blank value for the `color` field 
> one can use `[each[color]has[color]]`.


https://github.com/Jermolene/TiddlyWiki5/commit/e33d519ce0d78974d7cef80521abe63c131927cc
 
<https://github.com/Jermolene/TiddlyWiki5/commit/e33d519ce0d78974d7cef80521abe63c131927cc>

Best wishes

Jeremy

> On 9 Dec 2019, at 06:47, Mohammad <[email protected]> wrote:
> 
> Agree!
> 
> On Monday, December 9, 2019 at 2:21:36 AM UTC+3:30, TonyM wrote:
> Mohammad,
> 
> I was curious when I saw that myself. However even using something like 
> [!is[system]] generates a new false entry.
> 
> This needs a Fix
> 
> Tony
> 
> On Monday, December 9, 2019 at 8:07:07 AM UTC+11, Mohammad wrote:
> I got what you mean Mark!
> 
>  So this way always ONE tiddler which has not such field will be included. 
> 
> Very confusing!  :-)
> 
> --Mohammad
> 
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