I can't resize the fceux window smaller than about 700 by 700 or so, even though the emulation context is only using a 2x zoom of the NES framebuffer that's even smaller.
Version 2.2.2
2.2.2, or 2.2.2-r1? If you like, you can help by testing the bump request. https://bugs.gentoo.org/show_bug.cgi?id=599658
It appears this has since been fixed at least as of version 2.2.2-r1