Thought of another one which tripped me up not so very long ago - gaol, gaoler. Never had seen that spelling. Had no clue what it was. I started pronouncing it like GOW-el, GOW-el-ur. Then I think I was playing Neverwinter Nights and in the game it was being pronounced jail/jailer and I finally grokked what was happening. "We'll spell it in Auld English/Welsh/Gaelic/Urdu/Mandarin because that will make us seem erudite and COOL!"
That's perfectly modern British English. It's not "Auld English" or "COOL!", it's how 63-million of us spell the word. Including, presumably, Bioware (I don't know if Canada uses that spelling or not).