The plague of emoji insertion in French docs
There's more of this implicit US American bias in modern computing than you would think after the whole ASCII/Unicode mess - I thought they finally learnt something about computers actually being used by other people back then, but no.<p>One of my pet peeves: Badly implemented "press CTRL + / to search". Entering an actual slash, which requires e.g. SHIFT+7 on German keyboards, won't open the search box, but pressing the key where American layouts have a slash will.