OS: Kubuntu 15.10

I know that when I used Kubuntu 15.04, I could do

ctrl+shift+u 2126

And I would get the Ohm symbol. Well with the latest & greatest, I went to do the Ohm symbol tonight (in a browser, in Kate, in vi) and the ctrl+shift+u didn't work like it used to. Now I don't know if I am posting to the correct spot, and if I am not, I apologize. Anyone else experience this or know how to fix this? My Googlefoo was my down tonight because I didn't find anything helpful that was recent. Thanks ahead of time and again I apologize if this question is misplaced.

--nixternal

Unless Ubuntu applied some downstream patch(es) this only works in gtk (w/o special input handling, ie. neither firefox nor emacs)
see https://bugs.kde.org/show_bug.cgi?id=103788 -> https://bugs.freedesktop.org/show_bug.cgi?id=26747

Maybe there was something patched in previous releases. My work around is to just use the ~/.XCompose & set up my keyboard settings to use the right Windows key as my compose key. Just have to remember that, but it wasn't like I used it often, but enough to notice it wasn't working with Kubuntu 15.10.