Falling Through Moving Blocks

[lobsterhands]

Friends,

 

I'm having an issue with my player falling through blocks which move -- in this case vertically -- but only in Firefox (29.0).

Chrome 34+ and IE11+ seem to be fine.

 

It doesn't seem to happen under any clear circumstances. Sometime it is while jumping, stepping left/right, or just standing still. (Player bounce is not enabled, however the player does seem to bounce on the blocks as they descend. This could be an issue.)

 

Code: https://github.com/lobsterhands/Phaser_Roy

Game: http://lyledenman.com/phaser/roy/level1.html

 

Any ideas?