If a tool in Photoshop isn't working properly (for example, the crop tool crops a tiny little gray square, or painting with a brush paints the wrong color or nothing at all), try resetting the tool settings:
- Right-click (Windows) or Control-click (Mac OS) the Tool Preset Picker in the Tool options bar and choose Reset Tool to reset the active tool, or choose Reset All Tools to reset all tools to their factory default settings.
Also, would you mind restoring the preferences for Photoshop & see if it helps? See this article for reference: https://t.co/ulJI7cGn1G You may want to backup your settings beforehand: https://t.co/4dX7gkr36D
Let us know how it goes.
Thanks,
Akash