This happens because there are two live requests in the loadgroup during unload in this situation: the multipart response and the part being loaded. This happens most simply when leaving the bugzilla query page by doing a query.
Comment on attachment 535806 [details] [diff] [review] Allow storing the previous page in bfcache even if the new one is a multipart response. r=me, but this needs tests.
Attachment #535806 - Flags: review?(Olli.Pettay) → review+
I'll see what I can do....
Whiteboard: [need review] → [need landing]
Pushed http://hg.mozilla.org/projects/cedar/rev/f0270e2a21bc with test.
Whiteboard: [need landing] → fixed-in-cedar
Target Milestone: --- → mozilla7
Status: NEW → RESOLVED
Closed: 8 years ago
OS: Mac OS X → All
Hardware: x86 → All
Resolution: --- → FIXED
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