this is an on-again-off-again issue. I've seen it many times before.
the "quote" reply function only brings up the first few words of the quote text one wishes to quote. This is OK because trying 2 or even 3 times wiil eventually succeed in pulling up an entire quoted text.
the real problem is with the "edit" function because there's no way to try 2 or 3 times.
things are not always like this. Tomorrow the problem could resolve & we could be back to normal editing.
in the meantime there's only one workaround. Never Make Any Mistakes .