This bug is for crash report bp-40090b34-f6c0-442f-97d0-da1d20190820. ``` Top 10 frames of crashing thread: 0 xul.dll static void mozilla::ipc::IPDLParamTraits<mozilla::dom::BrowsingContext*>::Write docshell/base/BrowsingContext.cpp:1097 1 xul.dll mozilla::dom::PContentChild::SendWindowPostMessage ipc/ipdl/PContentChild.cpp:7278 2 xul.dll mozilla::dom::BrowsingContext::PostMessageMoz docshell/base/BrowsingContext.cpp:918 3 xul.dll static bool mozilla::dom::Window_Binding::postMessage dom/bindings/WindowBinding.cpp 4 xul.dll mozilla::dom::binding_detail::GenericMethod<mozilla::dom::binding_detail::CrossOriginThisPolicy, mozilla::dom::binding_detail::ThrowExceptions> dom/bindings/BindingUtils.cpp:3163 5 xul.dll js::InternalCallOrConstruct js/src/vm/Interpreter.cpp:539 6 xul.dll Interpret js/src/vm/Interpreter.cpp:3084 7 xul.dll js::RunScript js/src/vm/Interpreter.cpp:424 8 xul.dll js::InternalCallOrConstruct js/src/vm/Interpreter.cpp:567 9 xul.dll js::jit::DoCallFallback js/src/jit/BaselineIC.cpp:3229 ``` **Affected Versions:** Firefox 70.0a1 (BuildId:20190819215716). **Steps to Reproduce:** 1. Launch Firefox with a fresh profile. 2. Enable Fission. 3. Access the following [website](https://www.9gag.com). 4. Scroll down through the recent posts. Expected Result: The website is successfully displayed and Firefox is stable. Actual Result: At some point the recent posts are no longer visible (some portions of the websites becomes blank) and a tab crash occurs.
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This bug is for crash report bp-40090b34-f6c0-442f-97d0-da1d20190820. ``` Top 10 frames of crashing thread: 0 xul.dll static void mozilla::ipc::IPDLParamTraits<mozilla::dom::BrowsingContext*>::Write docshell/base/BrowsingContext.cpp:1097 1 xul.dll mozilla::dom::PContentChild::SendWindowPostMessage ipc/ipdl/PContentChild.cpp:7278 2 xul.dll mozilla::dom::BrowsingContext::PostMessageMoz docshell/base/BrowsingContext.cpp:918 3 xul.dll static bool mozilla::dom::Window_Binding::postMessage dom/bindings/WindowBinding.cpp 4 xul.dll mozilla::dom::binding_detail::GenericMethod<mozilla::dom::binding_detail::CrossOriginThisPolicy, mozilla::dom::binding_detail::ThrowExceptions> dom/bindings/BindingUtils.cpp:3163 5 xul.dll js::InternalCallOrConstruct js/src/vm/Interpreter.cpp:539 6 xul.dll Interpret js/src/vm/Interpreter.cpp:3084 7 xul.dll js::RunScript js/src/vm/Interpreter.cpp:424 8 xul.dll js::InternalCallOrConstruct js/src/vm/Interpreter.cpp:567 9 xul.dll js::jit::DoCallFallback js/src/jit/BaselineIC.cpp:3229 ``` **Affected Versions:** Firefox 70.0a1 (BuildId:20190819215716). **Steps to Reproduce:** 1. Launch Firefox with a fresh profile. 2. Enable Fission. 3. Access the following [website](https://www.9gag.com). 4. Scroll down through the recent posts. Expected Result: The website is successfully displayed and Firefox is stable. Actual Result: At some point the recent posts are no longer visible (some portions of the website becomes blank) and a tab crash occurs.