I’ve created a repeated task (every 1 year). Set a start date to October 2023. I marked it as done, then pressed “Undo” on the popup, went back to the task details, the start date is now October 2025.
Tested on try.
Can confirm, this is still a issue. When undo button is clicked after a reoccurring task is marked done, it marks next occurrence of it done as well. Bumping it up!