I didn´t update anything prior to this, so that´s not it. And 0.45.1 continues to run on top resolution - only 0.45.2 runs on 1600:900. This should be something that was changed with MHQ between 0.45.1 and 0.45.2.
FWIW I just updated the video card drivers and Java - no effect on either MHQ version.
So is there any way to manually change the resolution at which MHQ runs?
Okay, that problem has sorted itself out. Turns out I forgot to remove an old version of Java after installing the new one; since removing that old version, 0.45.2 looks just like 0.45.1 did.
I notived something else, though. Well, two things.
Firstly, apparently starting in 0.45.2, the handling of the "max acquisitions per day" limit was changed so that buying multiples of a single item counts as a single acquisition, so with a single acquisition per day, a person can buy as many of one item as they keep rolling successful acquisition checks. It took a bit of getting used to, but it makes a lot more sense this way.
Secondly, somewhere along the way, a bug seems to have been introduced; when doing acquisition rolls from one day to the next, i.e. failed acquisitions that are rolled again when advancing the day, the "max acquisitions per day" limit is not applied, meaning that the most skilled person does ALL the acquisition rolls. My poor, overworked head admin made some 800 acquisitions in only four days!