[WebView] "outstanding resource locks detected" when using clip in canvas

When "clip" is used while painting on an HTML5 canvas, the following msg is printed:

     [java] Outstanding resource locks detected:
     [java] ES2 Vram Pool: 25,735,760 used (9.6%), 25,735,760 managed (9.6%), 268,435,456 total
     [java] 9 total resources being managed
     [java] average resource age is 0.4 frames
     [java] 0 resources at maximum supported age (0.0%)
     [java] 5 resources marked permanent (55.6%)
     [java] 1 resources have had mismatched locks (11.1%)
     [java] 1 resources locked (11.1%)
     [java] 6 resources contain interesting data (66.7%)
     [java] 0 resources disappeared (0.0%)

An html test case is attached.