So making the height bigger has no effect in his case, he either has to choose to remove the size style which would cause the dropdown to grow (disproportional) or not support hsbar as you said.
That is indeed my problem, in the real case (the code was just to reproduce it), the combo drop contains the network names associated with the current status windows, so the amount items is not fixed, and in case only 2 I get those silly small buttons, and I consider it wrong, if it's called a code bug, a bad implementation or a lack of something, I rather do not care, it's just not logical (and weird too) to have two silly small arrow buttons for 2 items and 2 normal ones for 4 items, its as logical as having a slider that is small for a little amount items and big for a big amount, while it should be the opposite, the bigger the amount, the smaller the slider (towards a minimum to be clickable), to give more room to ...slide.
