Your system information

• Steam client version: 1779840850
• SteamOS version: 3.9
• Opted into Steam client beta?: Yes
• Opted into SteamOS beta?: Yes
• Have you checked for updates in Settings > System?: Yes

Please describe your issue in as much detail as possible:

Demonstrative images:
Joystick:

As Joystick:

Having a single slider control both scales makes it hard to intuit which direction disables which axis. Technically setting the scale to 200 shouldn't even disable one of the axis. To make the UX much easier, separate the axis like they are in the Joystick settings