Key Editor - Horizontal Zoom + covered

Can not zoom in with the plus button, bottom right corner, because the white square for stretching window covers the button and intercepts the mouse click.

Windows 7, text size setting at 125%. cu 8.05

With text size setting at 100%, I can see and click half of the plus button. I’m thinking many of the peculiar window irritations in cubase 8 may be exacerbated or even caused by this window text size setting.