new label won't work

[Benny Lange]

This question is in reference to Atlassian Documentation: Add, Remove and Search for Labels

I have added a new label to a few pages but when I try to use the tool "Content by labels" it won't work. Not alone and not in conjunction with other already existing labels. The latter work fine. I created the label according to the documentation, by just opening the label dialog and entered the name, space and operator of choice. What is here to do? 

[NotTheRealStephenSifersNOPENOPENOPENOPE]

When adding in new label, you may need to re-index to get them to display.

Depending on your instance, it may take a while (minutes to hours) to complete.

https://confluence.atlassian.com/doc/content-index-administration-148844.html