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Created attachment 157265 [details] Before Clicking While clicking on the hint-Symbol ("yellow Lamp with yellow triangle and exclamation mark") a breakpoint is going to be set, instead of opening the hint-dialog. System: Mac OS X 10.11.1 Hardware: MacBook Pro (Retina, 13-inch, Early 2015) Hardware Overview: Processor: 2,9 GHz Intel Core i5 Memory: 16 GB 1867 MHz DDR3 Java-Version: 8u65 My Opinion: Since the display is 13" the line-numbers are pretty small, which leads to this behaviour. The onClick()-behaviour of the hint-dialog is interfering with the onClick()-behaviour of the breakpoints. See the attached picture for a deeper understanding. BTW: The Graphics for the Symbols aren't optimized for Retina Display...
You probably clicked just before the light-bulb icon. Clicking just on the icon shows the hint for me, clicking into the space before the icon, adds/removes a breakpoint. We have issue #239745 for retina support already.