$.dropdown() not working

Summary

(Summarize the bug encountered concisely)

Steps to reproduce

$('#usr_names').dropdown({ data: ['lol','rofll'] })

What is the current bug behavior?

Dropdown with no urlfilter in selectpicker lol rofll

What is the expected correct behavior?

(What you should see instead)

Possible fixes

(If you can, link to the line of code thay might be responsible for the problem. Or suggest where you think the problem might be.)