Steps to reproduce the issue

simple bug...

Create search module (protostar [position-0], on home page)

Set search button image -> yes AND search button -> yes AND button text -> some text
button image NOT showing , only text IS showing but it is a link.

Set search button image -> no AND search button -> yes AND button text -> some text
button is now visible with text and it is a link.

Expected result

search button image must be visible when search button image option is set to yes!

Actual result

the opposite is happening.

System information (as much as possible)

Joomla! v.3.3
template protostar {position-0}
no extra extensions..all core

Additional comments

i am just reporting this simple bug to be fixed on next release, might be protostar's issue.