Sometime, we made changes on photoshop default setting whether consiously or unconsiously.
No problem we can fix this issue simply reset photoshop preferences. To reset photoshop default settings we need to follow below steps.
1. First close photoshop. If opened.
2 . Hold down Ctrl+Alt+Shift buttons
3. without releasing those three buttons, simply open Photoshop or a file that opens with Photoshop.
4. As Photoshop loads, you should get a prompt asking if you would like to “Delete the Photoshop settings file”.
5. Now click Yes
Now you successfully reset default settings on photoshop.