As discussed here, Evernote seems to have a minimum window size set at about 50% of the screen.
What's strange is, it's 50% whether the note is collapsed or expanded. So the note itself can be smaller if sidebars are showing, but you can't make it smaller if the sidebars are hidden. This is a huge problem for taking notes on Zoom calls and the like (something I do everyday). It doesn't seem like this would be a big change to the software, especially if it's only allowed with sidebars collapsed. Thanks!