There are several reasons why you may encounter this.
- You use ClipMenu , but you don't like Android studios.
- Your key binding is broken.
To solve the key binding problem, click File → Preferences and check what keywords are, maybe you changed it or imported settings from someone else. See Image as a reference.
Note: copy filter, you need to do this for insertion as well.

To fix the problem using ClipMenu.
- Right click on "Application / IntelliJ IDEA 14.app"
- select "Show Package Contents"
- edit
bin/idea.properties - add this property
ide.mac.useNativeClipboard=True - restart IntelliJ IDEA.
There is a YouTrack problem with additional information.
Bojan kseneman
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