When user resizes a textarea the WIDTH and HEIGHT get set in the STYLE attribute

Presumably there is some javascript somewhere listening for some event/s that causes the STYLE to get set?

I would like to listen to the same event/s so that we can set the STYLE for the containing DIV so that the resized textarea does not over or underlap the textareas to the right.

I have asked Sugar Support assuming they would know.

They refused to answer and suggested I ask here.

Does anyone know what javascript causes the STYLE to get set on a TEXTAREA whem the user resizes it?

Sugar Ent 13.0.2