In the bug report a commenter says: "This doesn't affect our own [Mozilla's] builds." I worked on Linux Chrome and over the course of doing so became pretty di

In the bug report a commenter says: "This doesn't affect our own [Mozilla's] builds." I worked on Linux Chrome and over the course of doing so became pretty disillusioned about this problem in particular. In a very real sense, all a distribution does for software like this is apply patches that are not tested/supported by upstream. In other words, either the distro can ship upstream or it chooses to ship some less-tested variant. In an ideal world upstream would be able to support all these configurations, but supporting Linux at all is already a tiny fraction of the total userbase and different Linux variants are fractions of that fraction; it's simply not realistic to expect the disproportionate effort required.