With monobook, responsive design and german language on deWiki a click on any of these three symbol on the top of the page opens my notices. I cannot reach my alerts, I cannot reach my user page.

With monobook, responsive design and english language, the behaviour is a little bit different. With these settings I can open my user page, but my alerts (the bell and the red numbers) still opens my notices.

It seems to be even more confusing. When I just switch the language from english to german, a click on my username opens my alerts, some pages/time later, a click on my username opens my notices – click on my alerts opens my notices in both cases.