kotenkov@, could you please look into this change (https://chromium.googlesource.com/chromium/src/+/4021ae18b9410d496adc92077e00672253f3876d%5E%21/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp) if possible?

Thank you!

Lower to Pri-2, real world usage of Outdent command is low.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6335918143438848

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_debug_content_shell_drt
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  isStartOfParagraph(startOfParagraphToMove). #text "\n   this should be red\n  "@
  blink::CompositeEditCommand::moveParagraph
  blink::IndentOutdentCommand::outdentParagraph
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_debug_content_shell_drt&range=268656:269696

Minimized Testcase (0.37 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv94Pplq_BnlLA2Er_-Z8i2gAbAyL46siFxAnddCTMxvN5jsTq8a3PZK85yexn2ayfEM2XPNgy4OUn64CQtxSpqqgiEvGMTYP700JNeMa_1E1gdsd8pzrweccdphoINasVtJgAcKGgWVNAtMtadeOwS3IAP4fSg?testcase_id=6335918143438848
<p>
   this should be red
  <p>
  <style>
   * {
    visibility: visible;
}
*:only-of-type {
    visibility: collapse;
  </style>
  <script>
onload = function() {
    document.designMode = 'on';
    var __v_106 = document.querySelector('blockquote');
    getSelection().collapse(__v_106, 2);
    document.execCommand('Outdent');
};
  </script>
  <blockquote>
   <table>
   <table>


Filer: mummareddy

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

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

ClusterFuzz testcase 5556283947614208 is flaky and no longer reproduces, so closing issue.

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