Gecko http://hg.mozilla.org/releases/mozilla-b2g18_v1_0_1/rev/9df4d6efd664 Gaia 0c80ae9ae2b7c11dd0aa39a2f649a9513f7ab204 BuildID 20130221230201 Version 18.0 Other keyboard layouts as English may miss important keys. I have seen this at least with the German layout which is under 'Other Latin scripts' in the keyboard settings. In that case all the umlauts are missing. We only display the default keys which also exist for English. I have no idea how much other layouts are affected. But it might be something the l10n team has to figure out. CC'ing Axel and Stas. Also I'm not sure if that would block our first release. Most likely it would depend on how the keyboard layout for those countries is affected.
Sorry, looks like you will have to do a long tap on the keys to see more options which also include the ö and others. Marking as invalid.