The FECustomFilter is not making the GC3D context active and some platforms are not doing that by default resulting in crashes of uninitialized contexts.
Created attachment 151369 [details]
Comment on attachment 151369 [details]
Clearing flags on attachment: 151369
Committed r122189: <http://trac.webkit.org/changeset/122189>
All reviewed patches have been landed. Closing bug.