It only reproduces on Release 69 if you flip the gfx.direct3d11.use-double-buffering pref to true. It does reproduce on Nightly 69 builds.
Bug 1586130 Comment 16 Edit History
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It only reproduces on Release 69 if you flip the gfx.direct3d11.use-double-buffering pref to true (since bug 1555956 made it false by default for release builds). It does reproduce on Nightly 69 builds.