We can already adjust the width of the fields window by click'n'drag but I didn't find a way to adjust the height ?
Hello,
Thank you for writing to us.
The Fields List's height can be adjusted via CSS.
Here is a JSFiddle example for illustration: https://jsfiddle.net/flexmonster/rknvL123/
Please let us know if you have further questions.
Best Regards,
Vera