Image size isn't work on pixels

[Mendi M]

hi, can't choose pixel in 'image size'. picture attached.

(sometimes somehow it's working, although stayed gray on the menu

[CShubert]

Hi @Mendi M testing here and it is working as expected.

Try resetting Prefs for the Beta:

/Users/yourname/Library/Preferences/ Photoshop Beta Settings (Mac Ventura)

/Users/yourname/Library/Preferences/Adobe\ Photoshop\ \(Beta\)\ Settings (Mac)
C:\Users\user name\AppData\Roaming\Adobe\Adobe Photoshop (Beta)\Adobe Photoshop (Beta) Settings )Win)

Launch BETA Photoshop While Pressing The Keyboard Shortcut

With Photoshop closed, press and hold Shift+Ctrl+Alt (Win) / Shift+Command+Option (Mac) on your keyboard and then Launch Photoshop the way you normally would.

https://helpx.adobe.com/photoshop/using/preferences.html#Manually  

[Kevin Stohlmeyer]

@Mendi M just check "Resample".