Nonsense. This is anachronistic, representative of Ye Olde Spelle Chequer, and as such in keeping with the medieval theme of the game. Do you want them to break character?
(Honestly, it feels like it’s not asking too much to expect the red squiggles in Word to be accounted for before pushing the “go” button, but I don’t pay the bills.)
I’d like to point out that it’s been 29 days since this bug was reported, and it’s still in-game, at least in the Xbox One version of Gems of War. I came here today to report this myself.