Blocks fail to drop through

[kozross]

I just played this game, and after one connect, the replacement blocks failed to drop through, causing a 'queue' of blocks to form above the top part of the block section, and an empty space to remain inside the grid.. I wanted to screenshoot it, but the game gave me a game over before I could.

[Zolmeister]

Yes, I have seen this before.
It has to do with the way the 'bounce' physics is implemented, and I've tried fixing it a few times.
This section: https://github.com/Zolmeister/Zop/blob/master/src/components/game/index.js#L194

The problem is that the block slows down too much on the bounce and loses all speed, causing it's velocity to get stuck at 0 (I think).

The code (written for js1k) is pretty hard to reason about.