hm I jsut tried again and it still aint wrking.
Like all shift+something combinations dont do anything in game for me.
may borwser sure detects shift+h and such (tested it with some javcascript console code) but the game doesnt react to it.
same goes for shift+s, does nothing for me.or more precisely behaves the way as if shift wasnt there.so shift+h does the same as pressing h in air does: gliding as usual.and shift+s does nothing since mere s key likely has no function in the game.
likely not my keyboard since shift+s is in general seen by the browser, jsut the game doesnt recognize the shift key in this whole situation.
can you just put the second jump on O or something, so h and then o does the double jump?