ACID principle violation

[carldebilly]

1. Open both the Official MS ToDo App and the Uno Todo App (WASM version is ok) on the same account
2. Create a new task using the Uno Todo app (this part could also be done in the MS app, but will lead ot sync issues whose are addressed in another issue)
3. Open the same task in MS app and change its title to something else (add "2" at the end)
4. Using the Uno todo app, complete the task

EXPECTED RESULT
We would expect the task to be completed with the "new" title set at step no3.

OBSERVED RESULT
The task is completed, but the most recent change is lost.

POTENTIAL SOLUTION
The Endpoint is sending the whole entity in its PATCH request. Only changed elements should be present, as documented in the Graph API.