Currently its impacting the latest Stable (51.0.2704.84) and Beta (52.0.2743.41).

Findit did not produce any suspected CLs.
Looks similar to  Issue 621017 .

Moving this nonessential bug to the next milestone.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

This issue is Pri-1 but has already been moved once. Lowering the priority and moving to the next milestone.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

ClusterFuzz has detected this testcase as flaky and is unable to reproduce it in the original crash revision. Skipping fixed testing check and marking it as potentially fixed.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4969403016019968

Fuzzer: bj_broddelwerk
Job Type: windows_syzyasan_chrome
Platform Id: windows

Crash Type: UNKNOWN
Crash Address: 0x0000000b
Crash State:
  blink::CompositeEditCommand::insertNodeBefore
  blink::ReplaceSelectionCommand::mergeEndIfNeeded
  blink::ReplaceSelectionCommand::doApply
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=windows_syzyasan_chrome&range=400073:400083

Minimized Testcase (4.14 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97u7GggCWx12f7p3eImNJosY87oO6fHplXR5sdhQ19CrS_tX5yvCSyMIcoh_y01vHn0WjgZqOREVe5E-sB_KA1bpihxhw-KKwM95D4khtbrUzF3ZVzjsdFoLgqdMMJGb73WT0bnnW9L7TiIc7JKxhL46y9WzA?testcase_id=4969403016019968

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

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

Mark WontFix according to #c5 and I could not reproduce on ToT and M53 cannary

Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot