how to change editor behavior in intellij idea
If you don't need vi keybindings, uninstall the IdeaVIM plugin.
If you don't want to uninstall vi, you can either turn it off, like @redredtokki states (Tools > VimEmulator), or
Change the Ctrl-X and Ctrl-V keys in File > Settings
under: Editor > Vim Emulation:
Change the column on the right from "Vim" to "IDE".
If you wanna use vim and also shortcuts like Ctrl+C/Ctrl+V/Ctrl+X, you may redefine the shortcuts as IDE shortcuts in:
File-->Settings-->Other Settings-->Vim Emulator
disable below option in menu bar.
Tools -> VimEmulator(Ctrl + Alt + V)