Your system information

• Steam client version: 1711734008
• SteamOS version: 3.5.17
• 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 video: https://youtu.be/mBGGgwc_7Yk
It is possible to open a config for preview and then changing any of the settings. This used to not be possible in the old UI. On top of that editing a preview config applies it automatically.

Steps for reproducing this issue:

1. Go to the controller config selector
2. Preview any config
3. Edit any of the bindings

Results:

The preview is editable and doing so applies the configuration

Expected:

All edits attempts to the preview should be blocked