Spotlight Search crashing

Hey guys,

Since I got my iPhone 5s Spotlight Search has been crashing. The way it happens is that I drag down Spotlight Search and the moment I am done typing, the Spotlight Search jumps back/disappears.

Then I have to drag down Spotlight Search again and there the text is still typed in and it works without any problems.

Has anyone of you experienced this problem before and is there a fix?

Thanks.