Visit http://en.m.wikipedia.beta.wmflabs.org/wiki/Main_Page on the above mentioned device, click on the search bar, and type something in the search overlay form. You'll see something like this:
{F4264428}
**Expected**: The clear icon (top right) should be aligned (vertically) in the middle of the search form.
Suggested verification, RTL+LTR, Landscape+Portrait to verify it's working plus verify non-regression with the fix:
[] Android 2.3 Browser phone form factor
[] Android 4.x/5.x/6.x Chrome phone form factor
[] Android 4.x/5.x/6.x Chrome tablet form factor
[] iOS 9.3 iPhone Safari
[] iOS 9.3 iPad Safari
[] Opera mobile (not mini) Android 4+ phone form factor
[] UC browser (not mini) Android 4+ phone form factor
[] Windows 7.5+ Phone IE
[] Desktop Firefox
[] Desktop Chrome
[] Desktop Safari
[] Internet Explorer 11