Well, the log shows that the TRR http channels are all canceled with the error NS_ERROR_ABORT. I can't tell the reason from the log. Maybe [FlushCache()](https://searchfox.org/mozilla-central/rev/153172de0c5bfca31ef861bd8fc0995f44cada6a/netwerk/dns/nsHostResolver.cpp#682) is getting called. Valentin, could you also take a look at the log? I've forwarded to you via email.
Bug 1556194 Comment 6 Edit History
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Well, the log shows that the TRR http channels are all canceled with the error NS_ERROR_ABORT. I can't tell the reason from the log. Maybe [FlushCache()](https://searchfox.org/mozilla-central/rev/153172de0c5bfca31ef861bd8fc0995f44cada6a/netwerk/dns/nsHostResolver.cpp#682) is getting called. Valentin, could you also take a look at the log? I've forwarded the log to you via email.