There is a conflict of restrictions on topics/tags with steemit!

Expected behavior

I want to create a new topic, which includes more than one dash. This topic is about Chinese ancient poetry, which is very different from both Chinese modern poetry and ancient poetry in other countries.

But, because of this conflict of restrictions on topics, I'm hesitating whether to change the topic! I don't know what the topics restrictions would be in the future. Now, I am very annoyed about the conflict!!!!!!!!!!!!!!!!

Actual behavior

On steemit.com, when I input the topic including two dashes, there was error message below the text box.

But when I input the same topic including two dashes, there was no error message, and the article can be posted successfully.

How to reproduce

I can show the screenshot of disagreement between busy.org and steemit.com

• Browser: Opera beta 51.0
• Operating system: Win 7

Recording Of The Bug

After I posted the article on busy.org, I cann't edit it on steemit.com:

By the way, there is the same problem on utopian.io, too.