After upgrade to the newest IntelliJ version (2021.2) the keyboard shortcut for the pipe sign produces no pipe sign but copies the next following character six times. When I search for a shortcut definition, I can enter the pipe sign in the preferences > keymap window. And then no shortcut is shown.
Maybe it has nothing to do with the problem: I could not update from 2021.1 to 2021.2. I had to newly install 2021.2.