Hmm… the problem seems to be related to:
> Multiprocess Windows: 0/1 Disabled forcibly
Since we load about:logins in its own process. Have you forcibly disabled e10s/multi-process somehow? Maybe with an environment variable?
Bug 1592562 Comment 5 Edit History
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Hmm… the problem seems to be related to:
> Multiprocess Windows: 0/1 Disabled forcibly
…since we load about:logins in its own process. Have you forcibly disabled e10s/multi-process somehow? Maybe with an environment variable?