Your system information

• Steam client version: 1669071089
• SteamOS version: 3.4, OS Build is 20221121.100
• Opted into Steam client beta?: Yes
• Opted into SteamOS beta?: Yes
• Have you checked for updates in Settings > System?: Yes, just now, no updates available.

Please describe your issue in as much detail as possible:

Describe what you expected should happen and what did happen.

I was trying to adjust the controller settings while paused in a game via the overlay menu (Pressing the "Steam" button on my Deck, highlighting the game > controller settings > controller settings). I was trying to change the behavior of my Gyro, as I am using it as a joystick for this game. I faced a couple of bizarre issues under the Gyro Menu > Gyro Behavior (Joystick) Settings Gear > Dead Zones.

1. With "Deadzone Type" set to "Default" or "Custom", selecting "Start Test" always shows the same value (Physical Joystick Position 0%, Translated Output Value 56%), and there is no way to change this value, I tried all of the Gyro axes, both joysticks, both touchpads, but regardless of what I did or when I did it, the test produces the same result.
2. I then stopped the test and attempted to set a custom deadzone. I can navigate down to the slider bar, and select either the '0' or '100' value with 'A', but then I can't find any way to adjust these values. Once again, I tried every button. I've clearly selected a slider correctly, because the slider is highlighted and "Adjust Slider" at the bottom disappears and is replaced with "Done", but there is no way to alter the 0 or 100 values to create a custom deadzone. I verified that this affects all three dead zone shapes.