Scrollbar size is too small for large list

[akshdeep-singh]

If sizeType is Full, then as the list grows, the scrollbar becomes smaller.
For large lists, the scrollbar becomes too small.

I suggest that there should be fraction constraint for such cases,
for example: the scrollbar should have minimum 10% of total height, or have a minimum Height parameter.

[GIGAMOLE]

Hi. This is a nice feature. I will try to add it in the future.