diff --git a/dom/canvas/test/_webgl-conformance.ini b/dom/canvas/test/_webgl-conformance.ini
index 87f40ba5244..e64bc0b6c19 100644
--- a/dom/canvas/test/_webgl-conformance.ini
+++ b/dom/canvas/test/_webgl-conformance.ini
@@ -4,7 +4,7 @@
 # Mark failing tests in mochi-single.html.
 
 [DEFAULT]
-skip-if = e10s || os == 'b2g' || ((os == 'linux') && (buildapp == 'b2g')) || ((os == 'linux') && (buildapp == 'mulet'))
+skip-if = e10s || os == 'b2g' || ((os == 'linux') && (buildapp == 'b2g')) || ((os == 'linux') && (buildapp == 'mulet')) # Bug 1136181 disabled on B2G Desktop and Mulet for intermittent failures
 
 support-files = webgl-conformance/../webgl-mochitest/driver-info.js
                 webgl-conformance/always-fail.html
diff --git a/dom/canvas/test/webgl-conformance/_wrappers/test_conformance__textures__texture-npot-video.html b/dom/canvas/test/webgl-conformance/_wrappers/test_conformance__textures__texture-npot-video.html
index 6e1a5ddf313..8583591db4b 100644
--- a/dom/canvas/test/webgl-conformance/_wrappers/test_conformance__textures__texture-npot-video.html
+++ b/dom/canvas/test/webgl-conformance/_wrappers/test_conformance__textures__texture-npot-video.html
@@ -14,6 +14,9 @@
           src='../mochi-single.html?conformance/textures/texture-npot-video.html'>
   </iframe>
   <script>
+    if (navigator.userAgent.contains("Android")) {
+      SimpleTest.expectAssertions(4); // bug 1143227
+    }
     SimpleTest.requestFlakyTimeout("untriaged");
     IFrameAutoresize.StartById('mochi-single', false);
   </script>