The above URL crashes on loading up. NTDLL! 77f76148() nsDebug::Assertion(char * 0x006af3bc, char * 0x006af3a8, char * 0x006af378, int 373) line 132 + 13 bytes nsAreaFrame::IncrementalReflow(nsIPresContext & {...}, const nsHTMLReflowState & {...}) line 373 + 32 bytes nsAreaFrame::Reflow(nsAreaFrame * const 0x012ceda4, nsIPresContext & {...}, nsHTMLReflowMetrics & {...}, const nsHTMLReflowState & {...}, unsigned int & 0) line 448 + 19 bytes nsContainerFrame::ReflowChild(nsIFrame * 0x012ceda0, nsIPresContext & {...}, nsHTMLReflowMetrics & {...}, const nsHTMLReflowState & {...}, unsigned int & 0) line 363 + 28 bytes RootFrame::Reflow(RootFrame * const 0x012cea04, nsIPresContext & {...}, nsHTMLReflowMetrics & {...}, const nsHTMLReflowState & {...}, unsigned int & 0) line 242 nsContainerFrame::ReflowChild(nsIFrame * 0x012cea00, nsIPresContext & {...}, nsHTMLReflowMetrics & {...}, const nsHTMLReflowState & {...}, unsigned int & 0) line 363 + 28 bytes nsScrollFrame::Reflow(nsScrollFrame * const 0x012ce124, nsIPresContext & {...}, nsHTMLReflowMetrics & {...}, const nsHTMLReflowState & {...}, unsigned int & 0) line 349 nsContainerFrame::ReflowChild(nsIFrame * 0x012ce120, nsIPresContext & {...}, nsHTMLReflowMetrics & {...}, const nsHTMLReflowState & {...}, unsigned int & 0) line 363 + 28 bytes ViewportFrame::Reflow(ViewportFrame * const 0x012c7584, nsIPresContext & {...}, nsHTMLReflowMetrics & {...}, const nsHTMLReflowState & {...}, unsigned int & 0) line 352 nsHTMLReflowCommand::Dispatch(nsHTMLReflowCommand * const 0x012a3830, nsIPresContext & {...}, nsHTMLReflowMetrics & {...}, const nsSize & {...}, nsIRenderingContext & {...}) line 165 PresShell::ProcessReflowCommands(PresShell * const 0x012bdcf0) line 973 PresShell::ExitReflowLock(PresShell * const 0x012bdcf0) line 522 PresShell::ContentAppended(PresShell * const 0x012bdcf8, nsIDocument * 0x0125e3f0, nsIContent * 0x012c74cc, int 0) line 1129 nsDocument::ContentAppended(nsDocument * const 0x0125e3f0, nsIContent * 0x012c74cc, int 0) line 1135 nsHTMLDocument::ContentAppended(nsHTMLDocument * const 0x0125e3f0, nsIContent * 0x012c74cc, int 0) line 667 HTMLContentSink::WillInterrupt(HTMLContentSink * const 0x01274b30) line 1515 CNavDTD::WillInterruptParse(CNavDTD * const 0x012be7c0) line 2651 + 27 bytes nsParser::ResumeParse(nsIDTD * 0x00000000) line 709 nsParser::OnDataAvailable(nsParser * const 0x01274a34, nsIURL * 0x01247b40, nsIInputStream * 0x0124dce0, unsigned int 3015) line 909 + 17 bytes nsDocumentBindInfo::OnDataAvailable(nsDocumentBindInfo * const 0x01247af0, nsIURL * 0x01247b40, nsIInputStream * 0x0124dce0, unsigned int 3015) line 1707 + 24 bytes OnDataAvailableProxyEvent::HandleEvent(OnDataAvailableProxyEvent * const 0x011e9bd0) line 635

Setting all current Open Critical and Major to M3

works now...

verified 2/18 builds