Training window not expanding when window is expanded

[sunnybCO19]

Was there an update last week that caused all of our trainings to suddenly stop expanding when the window is expanded to full screen?  When opening the training in our LMS, it opens as a smaller screen.  When we click to expand to full screen, the training window stays the same size.  All the white space in the photo below is the rest of the screen that the training slide won't fill in.  This just started last week and seems to be affecting even old trainings (from last year).

Thanks,

[Lilybiri]

Since the courses were already published, it is impossible that this has anything to do with Captivate. You'll have to look at the LMS, the browser: has anything changed there?