Search Bar of the Adobe Acrobat Reader

Hello,

I am wondering why the Search Bar of the Adobe Acrobat Reader can only be moved at the upper edge. It would be much more convenient if one was able to place it manually wherever it is most fitting, like e.g. in Microsoft Office Word. Then it could be placed in a way that it would not interfere with reading the document, for example. This would add much flexibility and comfort in my opinion. What do you guys think?