If I complete a Repeating Task⁰ and then undo the completion, it creates a New Repeating Task¹ on the future date, and then actually completing the Repeating Task⁰ will create the future Repeating Task⁰. Undo twice and it creates a New Repeating Task², undo thrice and it creates New Completing Task³, etc. so on the next date I may see Repeating Task⁰ due as well as New Repeating Task¹, New Repeating Task², etc.

And then if I don't delete the extras with correct options, I believe based on past experiences, that in two weeks I believe I will see Repeating Task⁰, New Repeating Task¹, New Repeating Task² all due again.

So for practical example from today, Monday, December 8:

° I completed weekly task of 'Bring in Trash Cans',

° and then I Undid the completion.

° I then completed the weekly task 'Bring in Trash Cans' again

+ I now have two 'Bring in Trash Cans' tasks due next Monday, December 15th.

° Experimentally, I undid the 'Bring in Trash Cans' task completion today

° and then completed the weekly task 'Bring in Trash Cans' again

+ I now have three 'Bring in Trash Cans' tasks due Monday, December 15th.

+ Each new 'Bring in Trash Cans' task is scheduled to repeat weekly

° I delete all the extra 'Bring in Trash Cans' tasks due Monday, December 15th.

~ (but depending on which options I choose while deleting those extra tasks...)

» Fast forward to Monday, December 22nd: I expect to see extra repeating tasks again. And this would continue every Monday until I delete them using the right options.