[@ nsTArray_base::ShiftData] [@ nsMsgDBView::ToggleExpansion] bp-41102878-93f5-11dd-9e3b-001cc4e2bf68 0 msvcr80.dll msvcr80.dll@0x1537a 1 xpcom_core.dll nsTArray_base::ShiftData nsTArray.cpp:173 2 thunderbird.exe nsMsgDBView::CollapseByIndex nsMsgDBView.cpp:4457 3 thunderbird.exe nsMsgDBView::ToggleExpansion nsMsgDBView.cpp:4273 4 thunderbird.exe nsMsgDBView::ToggleOpenState nsMsgDBView.cpp:1869 5 xpcom_core.dll NS_InvokeByIndex_P xpcom/reflect/xptcall/src/md/win32/xptcinvoke.cpp:101 6 thunderbird.exe XPCWrappedNative::CallMethod js/src/xpconnect/src/xpcwrappednative.cpp:2405 7 thunderbird.exe XPC_WN_CallMethod js/src/xpconnect/src/xpcwrappednativejsops.cpp:1477 FWIW, this happens in Imap and not in [the same] pop. May be important or not. Steps: In the thread pane I have a certain thread where twisty does not expand and on collapse it actually collapses the msg under it. If repeat the +/- it eats progressively the msg under it and eventually crashes when there is nothing left and would eat itself. Repro : always on a certain thread, not others. I can provide mbox and msf as this is test profile. And even accessing that Imap. But I would like to send it on request rather than just public attach as it has the test addresses and it's about an imap one. id's: Insiting I eventually get a crash with Crash ID: bp-41102878-93f5-11dd-9e3b-001cc4e2bf68 Crash ID: bp-bdae1687-93f5-11dd-a99f-001a4bd43ed6 and more .. This is derived from bug 456332 where I found it playing, but has nothing to do with that [UI] issue. Please change components etc as necessary.

regression?

ovidiu, still see this and bug 456332? (views have changed a lot in last couple months)

bug 524266 is likely the same, and has a test case, and a patch.

This is about a very specific thread in a very specific profile that did this all the time. Not elsewhere. If it is interesting to see what degenerated in that, I think I have that mbox+msf and can provide as they are test profile. But -I have narrowed it down to that specific point, -it belongs to a profile used under lots of nightlies , -I did not use it since betas, I think, and had no similar persistent issues so it's WFM