Description of the issue: Unformatted Copy and Paste is not working for Google Sheets
Exact URL of the website in question: https://docs.google.com/spreadsheets/u/0/
Did the issue present with [default Shields settings]: Yes
Does the site function as expected when Shields are turned off?: Yes
Is there a specific Shields configuration that causes the site to break? If so, tell us that configuration: I am not sure
Does the site work as expected when using Chrome: Google Chrome and Microsoft Edge, yes
Brave version (check About Brave): 1.23.73

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