Hmm, I was having trouble doing that unless I was using the wrong section of the post creator. I was in "topics" and I was pressing comma after steemitworldmap and it wasn't accepting it. Same thing when I was trying to type newzealand or australia as a tag in travelfeed.

I noticed when I started typing, there were suggestions which then populated when you clicked on them from the drop down list. Was I looking in the wrong place?

I'll be back to write some more travel blogs in the coming weeks so will see if I have the same issue again.