Predator could not provide any possible suspects.
Assigning to the concern owner from the CL --
https://chromium.googlesource.com/chromium/src/+log/4bd9033d09cb618c71d5714222ba1c9029d168fa..6038027e89747913716cf298c822f70f67444812?pretty=fuller&n=10000

Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/b71ac55bffca1c376d6ed4e540194436daccfbd1

@mstensho -- Could you please look into the issue, kindly re-assign if this is not related to your changes.
Thank You.

ClusterFuzz has detected this issue as fixed in range 497777:497807.

Detailed report: https://clusterfuzz.com/testcase?key=5739604706852864

Fuzzer: ifratric-browserfuzzer-v3
Job Type: windows_asan_chrome_no_sandbox
Platform Id: windows

Crash Type: Unknown exception
Crash Address: 0x67870737
Crash State:
  blink::LayoutBox::SetSpannerPlaceholder
  blink::LayoutMultiColumnFlowThread::CreateAndInsertSpannerPlaceholder
  blink::LayoutMultiColumnFlowThread::FlowThreadDescendantStyleDidChange
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_chrome_no_sandbox&range=497433:497463
Fixed: https://clusterfuzz.com/revisions?job=windows_asan_chrome_no_sandbox&range=497777:497807

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5739604706852864

See https://github.com/google/clusterfuzz-tools for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.