I'm trying to set some keyboard shortcuts in KDE. Some key combinations will work, and others won't, without explanation. For instance, I'm trying to set "Switch One Desktop Down" to Meta+N. I can set it fine, but then pressing Meta+N doesn't do anything. If I bind it to some other key combination, like Meta+H, or Alt+(, it works fine. If I open a terminal and type one of the key combinations I set, working ones don't show anything, but non-working ones print things in the terminal. For instance, since Meta+H works, I'll type Meta+H in a terminal, and nothing happens, since it's bound to "Switch to Desktop to the Right," and there is no right desktop. But if I type Meta+N, I see the terminal display @sn. Same for Meta+I, another key combination that isn't working. If I type Meta+I in a terminal, it prints @si. I looked in the config files (kglobalshortcutsrc) and nothing looks out of the ordinary there. I tried searching the file for other instances of Meta+N, in case there is a conflict, but there isn't more than one entry. I tried running dbus-monitor, to see what it's seeing, and I also tried removing kglobalshortcutsrc and khotkeysrc, setting everything to defaults, and setting everything to "none." I'm using Arch, with the latest KDE packages. If I'm not mistaken, this is a recent development, since KDE didn't have this problem a few days ago. I tried downgrading kwin, and kglobalaccel, but neither has worked yet.
I should add that I use the Colemak keyboard layout. I can reproduce this bug with a new user account by switching to colemak, and then assigning Meta+N to something. It's probably related to this in some way, since keys that are the same in qwerty and colemak, like H, are unaffected.
This looks very much like https://bugs.kde.org/show_bug.cgi?id=355046
*** This bug has been marked as a duplicate of bug 355046 ***