Be careful with old versions!
These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.
If you notice misaligned elements after updating it's because you didn't needed to upgrade, go back to 1.4.0
The styles applied by this extension have been created from scratch for this version, the search box is now hidden being its button visible only, you have to mouse-over the down arrow for it to appear. Also, the top-right buttons (Profile, Apps, G+) are hidden and you'll have mouse-over for it to appear as well.
If you didn't noticed any changes, don't update to this version... (I had to confirm i saw the Apps menu addition within Google search results page)