General issues
1) There were repeatedly server errors when adding portlets to pages, testing etc:
15:39:33,420 ERROR [MissingResourceImpl:78] Resource handler=[com.liferay.faces.bridge.application.R
esourceHandlerOuterImpl@9c0f666] was unable to create a resource for resourceName=[icefaces.ace/font
awesome/fontawesome-webfont.eot?] libraryName=[null] contentType=[null]
15:39:33,430 ERROR [MissingResourceImpl:78] Resource handler=[com.liferay.faces.bridge.application.R
esourceHandlerOuterImpl@9c0f666] was unable to create a resource for resourceName=[icefaces.ace/font
awesome/fontawesome-webfont.eot?] libraryName=[null] contentType=[null]

2) IE11 only: the same browser console errors are seen when testing certain components, however no functional issues found; as example: GMap - Info Window (clicking the "Seven" radio button), Chart Bar (page load):
CSS3111: @font-face encountered unknown error.
File: ice02
CSS3111: @font-face encountered unknown error.
File: ice02

3) While testing in IE11, the browser crashed a few times (blank page, "server not responding" message).

Note: 1) and 2) errors can be reproduced by testing the ace:comboBox portlets.