It appears that currently “Task lists” in SP are not supported by PowerApps, it would be great if tasks would be supported so that project members can also manage their tasks remote (e.g. on the shopfloor).
In some cases task list are also used in a similar way as a standard SP list. In this scenario Powerapps are not able to locate that list, since its a task list. So I fully support this suggestion. 🙂
I have the similar issue with flows, but there you can enter a custom list name and work around it. Would be great if you could add the same option for powerapps as well.