When the branch is not filled, the build parameters will not take effect in web ui

I’m using web ui to trigger manual build, the build Parameters will not take affect when Branch field is not filled.
Here are two results of whether or not the Branch Name is set.

Because new users can only put one embedded media item in a post, so i put the two results together.

Oh holy crap I’ve been freaking blocked by this all day! Thanks for posting this.