I sometimes don't get the normal jump height in H2A. I'll press the button, and it's like I only jump maybe 2/3 of the normal height. It's extremely annoying for making tactical jumps like the shortcut behind the camo tower on Stone Town, for example. That's a really easy crouch jump, but there are times when I come up like 3 feet short for no apparent reason. It's extremely annoying and can make the difference in retaking map control if you have to spend a full minute taking the scenic route around the map just to get up to the rocket area on Stone Town, for example. (I'm thinking of the jump from below the rocket spawn up to the ledge with the barrels, which is the only quick way up to the top of the map from Froman side. You can barely make it with a crouch jump, but will fall all the way down if the jump button screws up.)
Anyone else have this happen to them? This game seems to be so messed up that it's a different set of bugs for everyone, so your mileage may vary. You probably wouldn't notice it if you don't use shortcut jumps a lot.