bug? WebIQ Input field does not have the right width

Hello,

It seems like the input field widget has bugged. When opening the preview, the input field is shown correctly. However, when opening the HMI in the browser the input field is expanded even though I set the width in pixels. 
Even when placing a new inputfield without chaning any settings except the width, anywhere in the project not just inside this specific container, this behaviour is there. 

When enabling the multiline mode of the input field it behaves normally. However, this will place the field to the top which does not look nice, so i would like to use the normal mode. 

I have attached some pictures.