I haven't heard any strong reasoning why the rkv based xulstore is any better than the old, simpler, json implementation so I think we should morph this bug to remove the new version. The first step of that is going to be me writing an intent to unship message to firefox-dev noting that this change will lost folks window positions the first time they start Nightly after the change. Assuming not issues are raised from that we'll turn off the build config flag then after a while remove the new version and and clean-up the code.
Bug 1777973 Comment 11 Edit History
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I haven't heard any strong reasoning why the rkv based xulstore is any better than the old, simpler, json implementation so I think we should morph this bug to remove the new version. The first step of that is going to be me writing an intent to unship message to firefox-dev noting that this change will lost folks window positions the first time they start Nightly after the change. Assuming no issues are raised from that we'll turn off the build config flag then after a while remove the new version and and clean-up the code.