Duplicate partial tag with `Add Tags on Blur` option

[CreMindES]

Steps to reproduce:

1. go to https://voerro.github.io/vue-tagsinput/
2. turn on "Add Tags on Blur"
3. Type re
4. Click on a suggestion

Expected behavior

The tag that the user clicked on is added, and only that.

Actual behavior

The tag that the user clicked on is added plus the search fragment as a separate extra tag.

[Sitethief]

I have the same problem.