Cannot even use the paint bucket tool

[Eva Sotiriou]

Trying to fill in a blank new layer, with single solid color, yet the paint bucket tool is instantly stuck and will not work.

[CShubert]

Hi @Eva Sotiriou 

Try resetting Prefs for the Beta:

/Users/yourname/Library/Preferences/Adobe\ Photoshop\ \(Beta\)\ Settings 

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.