When using a gamepad in desktop mode, then clicking on the "Controls" tab under settings, the menu shows the options for SteamVR. Previously, this would show the controls for desktop mode with a graphic of a gamepad showing its mappings, like shown on VRChat's official documentation page.

This may or may not be related to a problem where the deadzones for gamepads are different from what they used to be

Edit: Some additional context that may be important - I found this out because I couldn't search for the "Mouse Look Sensitivity" option until I remembered I was using a controller. Putting down the controller and clicking on the Controls tab with the mouse button rather than Right Trigger shows the correct settings for Keyboard.

Edit 2: I was recently reminded of this because I had to take my Steam Deck with me on a trip only to find out that I couldn't access the right settings page as the Deck itself registers as a SteamVR input source, and looking around was tedious as I had to push the stick very far to do a small rotation.