Hey fellow Macsters, I have a late-2012 27" iMac running the latest macOS (10.13.4). I have been having this annoying problem for 3-5 months, I'm not too sure how long. I only want a Danish keyboard layout, because then I can write both English and Danish. But once in a while, it changes the keyboard layout to US English, by itself. And not only that, it also removes Danish from the list. WTH..?! Like it decides what I need and don't need. It almost feels provocative.. It can happen multiple times a day, or there can be days in between. The longest I've experienced is about a week. I have tried having both US English and Danish in the list, and I have tried removing US English and only have Danish. The result is always the same, it ends up only being US English. I have tried removing a ton of apps. But of course I have more I can remove, but the process is tedious and annoying. My dad has a newer iMac (21.5") but the same OS, and he does not have this problem (thankfully, lol). So there must be some app that is doing this. What else could it be? I'm not sure what to do, other than keep removing apps.. Is there some system log I can snoop in? In that case, which log, and what do I look for specifically? Any help is appreciated, because this issue is driving me nuts. -- EDIT, October 21: You're welcome to join me in my long journey, but if you just want my solution it's this: The problem was the modifier key for the Zoom function. I set it to '^ Control' and the problem went away. Permanently, this time. The setting is in 'System Preferences' -> 'Accessibility' -> 'Zoom' -> 'Use scroll gesture with modifier keys to zoom'.