how to investigate? org-element-cache Unregistered buffer modifications detected

[Daniel Ortmann]

    Hey there,
    I have a 1.2+ MB org-mode file and have been getting the following
    message for a week or two.  I have cleaned up content by archiving
    older content and have run org-lint to cleanup some syntax issues
    ...
    
    How to debug this type of issue?
    
    Warning (org-element-cache):
        org-element--cache: Unregistered buffer modifications detected.
        Resetting.
        If this warning appears regularly, please report the warning
        text to Org mode mailing list (M-x org-submit-bug-report).
        The buffer is: plan.org
         Current command: (org-agenda 4070 5168)
         Chars modified: 4070
         Buffer modified: 5168
         Backtrace:
        nil Disable showing Disable logging
      
    Thank you for your guidance.