You don't even need foreign languages to run into this problem. English is the only language I speak fluently, but I'm Australian. I'm also a programmer, and I have some american friends. So, depending on context sometimes I spell 'color' (programming or talking to Americans), and sometimes I spell 'colour' (talking to Australian friends and family). Same with behaviour / behavior, favour / favor, etc. The context for which spelling I decide to use is complicated. In the same document I might name the `getColor` function, but describe it as getting the colour of a pixel. I might have two chat windows open side-by-side with different people and in each window spell the same words differently.

All my devices insist on shaming me (or autocorrecting me) for one of those spellings. At this point it feels like a complete gamble which I'll get corrected on. I'm just slowly getting used to correcting the autocorrect. :(