A new test from WPT upstream css/css-flexbox/dynamic-bsize-change.html (https://github.com/web-platform-tests/wpt/commit/2792963d80565a8aac7a961152d59da6ab8d7404) is hitting a DCHECK when running in the layout_ng_experimental virtual suite during import:

https://test-results.appspot.com/data/layout_results/linux_chromium_rel_ng/207021/webkit_layout_tests%20%28with%20patch%29/layout-test-results/results.html

crash log for renderer (pid <unknown>):
STDOUT: <empty>
STDERR: [1:1:1011/064604.536158:FATAL:ng_flex_layout_algorithm.cc(24)] Check failed: !Style().IsColumnFlexDirection(). Column flexboxes aren't supported yet
STDERR: #0 0x0000041acc7f base::debug::StackTrace::StackTrace()
STDERR: #1 0x000004104d4b logging::LogMessage::~LogMessage()
STDERR: #2 0x000006ac92aa blink::NGFlexLayoutAlgorithm::Layout()
STDERR: #3 0x000006ab4258 blink::(anonymous namespace)::LayoutWithAlgorithm()
STDERR: #4 0x000006ab300e blink::NGBlockNode::Layout()
STDERR: #5 0x000006abf826 blink::NGBlockLayoutAlgorithm::LayoutNewFormattingContext()
STDERR: #6 0x000006abbdce blink::NGBlockLayoutAlgorithm::HandleNewFormattingContext()
STDERR: #7 0x000006aba74d blink::NGBlockLayoutAlgorithm::Layout()
STDERR: #8 0x000006ab440b blink::(anonymous namespace)::LayoutWithAlgorithm()
STDERR: #9 0x000006ab300e blink::NGBlockNode::Layout()
STDERR: #10 0x000006ad1a87 blink::NGLayoutInputNode::Layout()
STDERR: #11 0x000006abce93 blink::NGBlockLayoutAlgorithm::HandleInflow()
STDERR: #12 0x000006aba3e0 blink::NGBlockLayoutAlgorithm::Layout()
STDERR: #13 0x000006ab440b blink::(anonymous namespace)::LayoutWithAlgorithm()
STDERR: #14 0x000006ab300e blink::NGBlockNode::Layout()
STDERR: #15 0x000006aa5bb5 blink::LayoutNGBlockFlow::UpdateBlockLayout()
STDERR: #16 0x0000068fc388 blink::LayoutBlock::UpdateLayout()
STDERR: #17 0x00000690dd05 blink::LayoutBlockFlow::PositionAndLayoutOnceIfNeeded()
STDERR: #18 0x00000690e1e8 blink::LayoutBlockFlow::LayoutBlockChild()
STDERR: #19 0x00000690cad6 blink::LayoutBlockFlow::LayoutBlockChildren()
STDERR: #20 0x00000690aedb blink::LayoutBlockFlow::LayoutChildren()
STDERR: #21 0x00000690a4ab blink::LayoutBlockFlow::UpdateBlockLayout()
STDERR: #22 0x000006a32424 blink::LayoutView::UpdateBlockLayout()
STDERR: #23 0x0000068fc388 blink::LayoutBlock::UpdateLayout()
STDERR: #24 0x000006a32701 blink::LayoutView::UpdateLayout()
STDERR: #25 0x000006507c4c blink::LocalFrameView::PerformLayout()
STDERR: #26 0x000006505fb7 blink::LocalFrameView::UpdateLayout()
STDERR: #27 0x0000061c1626 blink::Document::UpdateStyleAndLayout()
STDERR: #28 0x0000061c1fb8 blink::Document::EnsurePaintLocationDataValidForNode()
STDERR: #29 0x00000668771d blink::HTMLElement::offsetTopForBinding()
STDERR: #30 0x000005b3a189 blink::V8HTMLElement::offsetTopAttributeGetterCallback()
STDERR: #31 0x000002733734 v8::internal::FunctionCallbackArguments::Call()
STDERR: #32 0x000002731db8 v8::internal::(anonymous namespace)::HandleApiCallHelper<>()
STDERR: #33 0x000002730bdb v8::internal::Builtins::InvokeApiFunction()
STDERR: #34 0x000002c9b922 v8::internal::Object::GetPropertyWithAccessor()
STDERR: #35 0x000002c9a8ae v8::internal::Object::GetProperty()
STDERR: #36 0x000002ba8f1a v8::internal::LoadIC::Load()
STDERR: #37 0x000002bb7c67 v8::internal::__RT_impl_Runtime_LoadIC_Miss()
STDERR: #38 0x0000033ab5b5 <unknown>
STDERR: 
STDERR: [31249:31273:1011/064604.911651:WARNING:crash_handler_host_linux.cc(341)] Could not translate tid, attempt = 1 retry ...