Why are SharePoint list items duplicating automatically?

My list acts as a task list and is populated through a MS Form and then power automate. This process works as it should and allows users to add up to 20 different tasks (Items) within the list at once. However I have set up a custom form within the list that has been edited through power apps and allows users to add a singular task if they want. Tasks are grouped by area. If I add a single task to an area through the power app, this task doesn't appears, but instead just duplicates all the tasks that were already under that area and creates a new group of that area. So I then delete the duplicated items and the original ones then automatically get removed also, leaving me with the individual task added...  Any Idea what's causing this? I have an identical set up for a separate part of the factory and do not have this problem ( This one was set up first). However I checked both against each other in terms of the power app set up and cannot find the problem. Any suggestions?