The custom-fields list is shown at the right side of the “Fields” section and I understand that it is this way to mantain the two-column table aspect, were the “Fields” title is located inside the first column and the custom-fields are located inside the second column.
I think this two-column table aspect could be changed for the custom-fields in order to use a large area that is been lost in the first column. This can be done making the “Fields” title ocuppy two columns and the custom-fields list too.
This tiny change could avoid the custom-field’s line breaks or in software words, word-wrap less, resulting in general shorter scroll size of any Task.
I made some html changes to an Asana task page to show what I meant, side by side in the image below. Left side is the original design and the right side is the changed one: