Google Tasks: Substasks available only for company profile

I recently noticed that I can now create subtasks in Google Tasks, but this is only available for my Google Workspace account (company's profile), not my private account. I even have the beta app on my phone.

Edit: I just realised it is working for personal profile too but on the Android app. There is a bug in the website. Clicking on 'create a subtask' creates a new task.
ALSO, no subtasks for recurring tasks. :/
I wanted to create a task (and subtasks) for a 5 step process I need to do every day.