Page setting creates a crash Windows 10 MuseScore latest version of 3.6.X

I downloaded Bach's invention #13 from Musescore.com

It was in a page layout which did not fit on one screen and my goal was to set a page size such that I could see the entire piece on my monitor. First I went into "page layout" and changed the page from portrait to landscape. I then saw that I can change the aspect ratio to a paper size that does not exist. I only changed the width of the layout but not the height. I kept going up in numbers to increase the width until I was satisfied, (I think that it was in the 350 - 380 mm range?), and clicked apply, but nothing happened other than it created the sound of a bell each time I clicked the mouse, otherwise I could do nothing to exit the screen. To the best of my recollection I kept hitting the Esc button on the keyboard to get to the screen that allowed me to close and restart MuseScore. I was able to open the file and tried to reset it again.
but was not able to even open the "Page Setting" and the program crashed like before. I then rebooted the computer and that cured the problem. I hope that I described it clearly enough.