Testing logs from recent Mojave builds shows that OpenCL is checking more CPU-specific values as part of WebKit painting operations. We need to allow these checks in the sandbox to support these more optimized drawing operations.
Created attachment 345803 [details]
Comment on attachment 345803 [details]
Clearing flags on attachment: 345803
Committed r234223: <https://trac.webkit.org/changeset/234223>
All reviewed patches have been landed. Closing bug.