In messages, at least a quart a of the screen on the left is filled with related information.
How do I get messages to fill the iPad page instead of having related information occupying at least a quarter of the page on the left?
iPad Pro, iPadOS 15
Question marked as
When using the native Messages App, you will have a sidebar that shows a list of message conversations - while the main window shows the actual conversation that you select from the list. The sidebar cannot be hidden.
Apple do invite submission of comments and feature requests via its Product Feedback portal. For iPad and iPadOS:
More information about using Messages in iPadOS can be found here:
https://support.apple.com/HT201287