Thank you for reporting the bug and providing a detailed description. Based on your description, I believe you are referring to a bug on this platform (attached image). Could you please confirm if this aligns with the problem you encountered? If you are referring to a different platform, could you kindly attach the relevant image for better understanding? Your assistance is much appreciated.
No, it is the one that moves up and down if you are not on it, but if you are on it it falls. It is also the first different colored platform of level 2. I couldn't get a screenshot because the posting thing wouldn't let me :).
To get the bug, I was the biggest player, and I got it sometimes by jumping off the left block in the pic, spamming space before hitting the block, and then trying to hit space just as I hit the block. I think the bug stops happening after you get the bug twice, but I do not know. Doing this makes it somewhat easy to get after reloading.