my suggestion is this (separate the "UP" key and "jump")Why in the hell does the climbing mechanic apply to platforms. I cant even count the number of times ive been fighting in my boss arena only to have my character decide to stop completely and climb up a platform instead of flying through it.
i literally use "ALT" as up to climb ropes and ledges and "W" for fly/jump
but its up to you if you find this harder then i have nothing else to say casue ive been using this keybinding ever since my 1st terraria game-play at vanilla
i always separate "UP" and "JUMP" cause i ended up climbing ropes and vines if i put them at same button