Graphical Error in Yosemite

Seems like an ok app but I couldn’t figure out how to make the smaller version of the calendar, and you can’t read the toolbar buttons (next month, previous month, settings, the name of the month) because the area behind the text was clear instead of white, so it’s unreadable against my background. I assume that’s a Yosemite problem.

Endi1992 about Calendars