Critical bug report - iOS app task creation

There is a major bug in the iOS app.

Steps to reproduce:-

1. Open upbase iOS app

2. Tap on the blue + add task button bottom right

3. Add task name, select yourself as the assignee, set the due date to tomorrow and tap add

4. The task is added WITHOUT the assignee and so is lost into the abyss.

Weirdly, if you keep the app open and add a separate second task, the assignee is correctly added to the task, so it appear to be restricted to adding a task when first opening the app (which is pretty much the only reason I open the app!)

Hope you guys can fix as it has been causing a lot of stress, adding tasks for people and then wondering why they have not seen/done them!