multi word tag issue

[palitu]

Describe the bug
when you create a multi-worl tag, you cannot select it in other fields, when you select it from a drop down, it only enters the last token of the string, and asks if you want to create a new tag.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'tags'
2. create new tag called "test tag"
3. go to list
4. select the "Enter Tags" input text box
5. select "test tags" from the drop down list
6. note that "tag:" is entered in the text box.

Expected behavior
I would expect that it would use the tag "Test Tag"

Screenshots
N/A

Additional context
Using Firefox on Windows 10.

[jmattheis]

I think I planned tags to not include spaces, thus, it is a bug that the tag page allows the creating of tags with a space inside.