This bug is for crash report bp-fd061479-5b13-4a18-93c7-71c080190601.

Top 10 frames of crashing thread:

0 xul.dll js::GCMarker::severWeakDelegate js/src/gc/Marking.cpp:665
1 xul.dll js::ProxyObject::nuke js/src/vm/ProxyObject.cpp:177
2 xul.dll js::NukeCrossCompartmentWrappers js/src/proxy/CrossCompartmentWrapper.cpp:499
3 xul.dll nsresult nsXPCComponents_Utils::NukeSandbox js/xpconnect/src/XPCComponents.cpp:2087
4 xul.dll XPTC__InvokebyIndex 
5  @0xff860ad3c7 
6 xul.dll round 
7 xul.dll static bool XPCWrappedNative::CallMethod js/xpconnect/src/XPCWrappedNative.cpp:1157
8 xul.dll static bool XPC_WN_CallMethod js/xpconnect/src/XPCWrappedNativeJSOps.cpp:943
9 xul.dll js::InternalCallOrConstruct js/src/vm/Interpreter.cpp:540

There are 9 crashes (from 7 installations) in nightly 69 with buildid 20190601094047. In analyzing the backtrace, the regression may have been introduced by patch [1] to fix bug 1167452.

[1] https://hg.mozilla.org/mozilla-central/rev?node=37f9bd277c34

(In reply to Calixte Denizet (:calixte) from comment #0)

There are 9 crashes (from 7 installations) in nightly 69 with buildid 20190601094047. In analyzing the backtrace, the regression may have been introduced by patch [1] to fix bug 1167452.

yes, that is the regressing bug.