UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36

Steps to reproduce the problem:
1. Open Dev Tools and find a style that can be modified numerically (eg height: 50px)
2. Select the number and press the Page Up or Page Down button.

What is the expected behavior?
Page Up/Page Down should increment or decrement the number by 10.

What went wrong?
The number only changes by 1.

Did this work before? Yes Unknown, sorry. It's been broken for 6+ months.

Chrome version: 58.0.3029.110  Channel: stable
OS Version: 10.0
Flash Version: 

The shortcut is still listed on the Dev Tool Keyboard Shortcuts Reference page, under "Styles sidebar":
Increment / decrement value by 10	PgUp, PgDown
Increment / decrement value by 100	Shift + PgUp, Shift + PgDown

https://developers.google.com/web/tools/chrome-devtools/shortcuts