Yes, non english - but I know how to change this from language file ;) The problem is, that I have "number", not "feature" text on button ;)
Maybe something from source will help You to fix this issue:
<input name="feature-button" value="252697" type="submit" class="qa-form-light-button qa-form-light-button-0" original-title="Feature this question">
SO VALUE is showing as "name" of button .
My script has MANY core hacks and installed plugins, but i installed on standard q2a 1.7.4 too, and I have same problem :/