With the default Webview, everything was just fine. The problem happens when I tried Crosswalk.
With Crosswalk@12 appear strange graphical bugs.
Tapping, dragging or something like those cause random ghost elements to appear.
random means “I don’t know exactly what triggers the bug”.
ghost means that it’s only a graphical bug. I mean, if you tap a ghost element covering an actual element, you still tap the latter, so everything except appearance works.
In addition, when debug console(chrome://inspect) highlights at least one element (you know, colored transparent overlay), the bugs will disappear, causing only frame rate loss.
I tested it only on Galaxy S3(4.4.4) and Galaxy Note 2(4.4.2), haven’t tested with diffrent versions of Crosswalk yet.