search procedure became more complex

Before the last update I could enter a search term into the search field, and it opened immediately a box offering the different search engines that I have installed. Just one click on one of them and my search got started (or simply <return> for using the default engine) But now I enter a search term but my search engines are not offered anymore. I have to click the symbol of the current engine to the left of the field and there chose the desired engine. But with this the earch doesn't start yet. It's still necessary to click the "Go"-arrow or press return. So it got more complicated. Is there a way to get the old method back? Thanky you in advance