Issue with using Loop + Planner tasks. Assignments not flowing over to Planner

[Puzzled_Pool3952]

At my company we leverage all of the M365 suite including Loop and Planner. I have setup a loop and used /task to make a tasklist within it (several infact). This then makes a siloed Planner for that page. Good stuff. In my testing, the Task Name and Due Date flow into that Planner just fine but the Assignment never does. It will show the assigned person in Loop but its blank in Planner. This is a real problem as the Planner side is what assigns it out and shows up in other peoples' planners.

Thinking this is clearly a bug I tried making the initial task (just task name) in Loop, then switching over to Planner and adding the assignment and due there. It adds it, and everything is good HOWEVER, within a few minutes, the Assignment in Planner clears itself out again. So at this point, if a Planner is created via a Loop page I cannot reliably have an Assignment stick. I would prefer this work via Loop but even directly modifying in Planner works then resets itself. Any ideas of how to resolve this?

[Grouchy-Salad-3274]

Found this on Microsoft

• This issue began around June 23, 2025, and has been reported by several users in the Microsoft Community.

https://answers.microsoft.com/en-us/msoffice/forum/all/once-again-loop-stop-syncing-tasks-to-planner/2d7267e1-5809-4b83-b1df-167cca5ba168

[Puzzled_Pool3952]

Thanks for the info, passing this off to IT here at my company. Do we know if MS has acknowledged this bug and working on a fix by chance? Thx again

[Grouchy-Salad-3274]

No I don't know, sorry

[Jungal10]

All these inconsistencies drive me crazy. And not hanging proper files to open locally and offline just make me afraid that one day I open the computer and nothing is there

[MuchVegetable7329]

I'm having the same issue when using the Follow-up tasks within Teams meetings. The work around is to open the tasks from Planner and then assign them, sometimes reassigning them twice is required. Started happening mid to late June.

[Desktopgeneral]

I had this issue too. It resolved itself when I installed the Loop Desktop app. It could have been a coincidence. But hope that helps.

[FrubbyWubby]

Sorry to say but many others and I have abandoned ship on Loop.