Layout problem with empty element

I have problems with layouts in ios.
If i.e. I arrange a Textfield and a webview in a column view with a the textfield using only one line in top and the webview using the rest of the screen, it works, when the webview is filled, but not if the webvie (initially) is empty. Then the upper part of the layout uses half the screen.

Hi there. Can you post any screenshots?

Albert @ Thunkable