Steps to reproduce the issue

Edit a user, view source, look at the bottom of the list of scripts in the head, you will see an empty <script></script> tag. The presence of this empty tag prevents any further script declarations from being run on the page.

Expected result

no empty script tags

Actual result

empty script tag

System information (as much as possible)

4.0-dev downloaded yesterday

Additional comments

I believe this has to do with the template and the toggleSidebar declaration, as the empty tag appears at that location and without a type attribute.

I'm trying to test a field plugin that inserts a script declaration and this empty tag is causing an error.