Intellij - what is this strange selection, and how do I turn it off?

Intellij Idea

Intellij Idea Problem Overview

See the screenshot below to see what I mean. Basically, Intellij only highlights the box I draw with the cursor, but leaves the rest of the editor untouched. I have no idea why it happens, and the only way to resolve it for now is to close and reopen the editor. I have observed the same behavior on a Linux box and a MacBook, both when editing Java and PHP files, so I am not sure it's a bug.

bad intellij selection is bad

The desired behaviour is standard row selection, i.e. highlight all rows which I drag the cursor over.

Intellij Idea Solutions

Solution 1 - Intellij Idea

I think you have enabled 'column selection'.

Option can be toggled via these methods:

> Menu Bar -> Edit -> Column selection mode

> Document Body -> Right Click -> Column selection mode

> Keyboard Shortcut -> ALT + SHIFT + INSERT

Solution 2 - Intellij Idea

The column select mode is enabled, use Alt+Shift+Insert to enable or disable this mode.

Solution 3 - Intellij Idea

Shift-command-8 to toggle it back and forth on OSX.

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Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestioncsvanView Question on Stackoverflow
Solution 1 - Intellij IdeapveentjerView Answer on Stackoverflow
Solution 2 - Intellij IdeaMARWAN AMEENView Answer on Stackoverflow
Solution 3 - Intellij IdeaTiggybooView Answer on Stackoverflow