showcase-mobile > all Mobile components demos:
The demo pages are blank, and JS errors can be seen in browser console when navigating to any Mobi component demo, after seeing the progressBar > Push demo.
Refreshing the page restores the Mobi demo, however the browser console error occurs again when navigating to another Mobi demo.

Error: jsf.ajax.request: source not set
http://localhost:8080/showcase/javax.faces.resource/jsf.js.jsf?ln=javax.faces&v=4_2_0_160223
Line 1


This issue can also be reproduced with Mojarra 2.2.12, but not with MyFaces JSF.

Using Jenkins ICEfaces 4.1.1 Build #6, the error can be reproduced immediately on Tomcat 7.0.42. After modifying the web.xml to disable resource coalescing, the error went away. After re-enabling resource coalescing, the error could be reproduced again on Firefox41, but only after cleaning and restarting the server twice. On Chrome the error could not be reproduced again after re-enabling resource coalescing. The appearance of this error seems to be random.