Steps to Reproduce

https://zkfiddle.org/sample/38gu6de/16-Another-new-ZK-fiddle

run fiddle.

Add vflex="min" to menubar, run again (fiddle here)

Current Result

without vflex="min", menubar overlaps next items (internal size larger than component size)

with vflex="min" menubar, the height of the menubar is calculated with the height of every menu items contained (too tall)

Expected Result

menubar should be just as tall as necessary to contain all menuitems

Debug Information

somehow caused by borderlayout with another region in the same component

Workaround

<zk xmlns:w="client">

<menubar w:onAfterSize="zUtl.fireSized(this.parent.parent)">

force sizing events