Repeating tasks unable to be put in "Done"-state

Hello,

we want to create tasks in Vikunja, which automatically reset their state from “Done” to “To Do” at the start of each week as a way to track who completed his unchanging weekly assignment and who hasn´t. Our problem is, that once we set a repeating interval, the task can´t be put into the “Done”-state despite the confirmation box showing up in the lower left corner saying it did save successfully. It is simply put back to “To Do” immediately, so we can´t properly track it.
If progress is defined, it doesn´t reset either, which would have been an alternative otherwise.

We want these tasks to stay “Done” until the start of the next week, regardless of when the task was completed if possible.

Thanks in advance!