This has bothered me for quite a while: Hover the mouse over a variable in the debug toolwindow. Idea shows the string's value in a popup. Use the scrollbars to inspect all of the text. => Bug: Even while your dragging the scrollbars the popup disappears as soon as you leave the popup's area. This feels like Idea is mocking me: Hey, come and see the value - he he you were too clumsy, I am going to hide it