Open Radar

 
In Yosemite since DP8 (regression from all previous versions), Popup Buttons that are Recessed & Borderless display the text in white when hovered.  But without the background (as properly not changed because borderless is off), the white text is unreadable (indeed, in my window, which has a white background, the button simply disappears when you hover over it).

Steps to Reproduce:
Create a new project.
Create a popup button
Change it to Recessed
Change it to Borderless
Run - hover over button, button disappears (well, nearly disappears because the default window color is a light gray and the text is white).

Expected Results:
In Borderless mode, the text should not change color (or the change should be more subtle, to black or a lighter but still dark grey).

Actual Results:
Since DP8, the button simply disappears when you hover over it, a terrible regression.