This issue looks similar to Bug ID - 765616. So, assigning to the concern owner.

sadrul@ -- 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 505361:505385.

Detailed report: https://clusterfuzz.com/testcase?key=5407817120088064

Fuzzer: inferno_layout_test_unmodified
Job Type: windows_syzyasan_content_shell
Platform Id: windows

Crash Type: Null-dereference
Crash Address: 0x0000005f
Crash State:
  aura::client::GetCaptureWindow
  aura::WindowTreeHost::OnHostLostWindowCapture
  ui::WinWindow::_ProcessWindowMessage
  
Memory Tool: SYZYASAN

Regressed: https://clusterfuzz.com/revisions?job=windows_syzyasan_content_shell&range=503952:503954
Fixed: https://clusterfuzz.com/revisions?job=windows_syzyasan_content_shell&range=505361:505385

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5407817120088064

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.

ClusterFuzz testcase 5407817120088064 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.