I am also using the iPad to create and eidit the apps in Power Apps. But the browsers(Edge, Chrome, etc) are not working in my iPad tablet to create the app. Is this the bugs or not in its functionalities yet? Is it also in the roadmap for tablet developers?
Yes, PowerApps doesn't support to edit apps in IPad with Chrome, Edge, Safari, FireFox, even though your Ipad have been updated to IPadOS 13.1. Someone has submitted an idea to PowerApps Ideas Forum, you can follow up it.