Wind charges do not launch the player up if used on a block with a grass, flowers, saplings, mushrooms, nether plants, (including twisting vines), torches, snow layer, carpet, trapdoor (closed), pressure plate, coral fan, glow lichen, sculk vein, redstone dust, redstone repeaters and comparators, banners or rails on top.

After taking a closer look it seems the blocks listed above are causing the wind charge to phase through the block below it, landing on the second block and not launching the player.