How do hide sidebar for adding review comments


See this Plus Sign? It's wasting an ENTIRE column's worth of space in Webstorm for the sole purpose of adding…. git comments? I've literally *never* used this before. Right-clicking this area doesn't show any way to remove this.


You are in the review in editor mode, to disable it, please see: 

This view offers you to do PR reviews right in the editor as long as you have the source branch checked out.