There appears to be some inconsistency between BrowserHost's load context and the parent DocShell's load context (specifically the UseRemoteTabs() value). Confusingly, this only seems to happen in a few Android WPTs. The updated patch fixes this for the time being with a less-strict failure condition.
Bug 1562264 Comment 6 Edit History
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There appears to be some inconsistency between the BrowserHost's load context and the parent DocShell's load context (specifically the UseRemoteTabs() value). Confusingly, this only seems to happen in a few Android WPTs. The updated patch fixes this for the time being with a less-strict failure condition.