Define a date range

When I choose from the date range frame “day”, “week”, “month” or “year” I cannot confirm my settings because there is no [Apply] button, and Piwik does not automatically recognize my input. So, every time I have to choose “date range”, select a from date and a to date, and then click on [Apply date range] button.
I have always used Firefox and I’m usign its last version, 19.0.2.
Is it possible to solve this problem?

You have to click twice on the period name. This replaces the “Apply” button but agree, it can be confusing