jQuery UI Selectmenu / collapsing select-box / options width not taken into account anymore?

jQuery UI Selectmenu / collapsing select-box / options width not taken into account anymore?

Hi All,
did anyone also noticed, a selectmenu is collapsing since one of the last jquery-ui versions?

Having a select-tag without any width and an option-tag which has a quite long text, now I get rendered a select-box with ellipsis appended to the selected option.

In previous versions (and unfortunately currently I'm not able to define the version / not reproducable), the width of the select box was rendered depending on the longest option-entry.

So, when opening the menu, its width also matched the selectbox width.
Now, I got a kind of unwanted "Stufenbildung"... (Sorry, its german, don't know the english word. Its an unwanted visual
appearance)

kind regards
Patrick