The min width for select boxes is huuuge in many cases. The reason is that in src/sql/parts/query/editor/media/queryActions.css there is a global setting:

.monaco-select-box {
	cursor: pointer;
	min-width: 150px;
	padding: 2px;
}

This makes it really hard to use in dialogs where you may want this to be on a single line with other inputs. Can we fix to scope only to query actions? A more common min width would be 75px.