Updating from JDK7 to JDK8b106, I saw that some of my panes have broken layouts now, with some panes no longer filling the screen but instead collapsing to minimum height.
I am using the third-party MigLayout/MigPane mostly.

I am reporting this as I am unsure whether it's intended behavior due to a change in layouting (and the burden of fixing it lies with me or the Mig-people) or whether it's accidental.