Removed the mouse shortcut 'button3' on the 'ShowPopupMenu' that caused popup menu to not persist unless a mouse movement was registered as described by this bug filled in the intellij bugtracking system here http://youtrack.jetbrains.com/issue/IDEA-66182
Merge branch 'master' of https://github.com/ufasoli/IntelliJ-IDEA-Eclipse-on-Mac-Keymap