Platform Development • Re: e10s support question

See this forum post: Multi-process, or: the drawbacks nobody ever talks about.

There is no plan whatsoever to support this, not even behind a disabled-by-default pref.

Btw if you're serious about supporting e10s in your fork you should probably look at the hundreds of security advisories by Mozilla related to multi-process and backport their fixes. Otherwise you're just opening yourself to the hundreds of vulnerabilities already fixed by upstream that have been considered N/A for us (due to sticking with the single-process model) for a long time.