Bed turns red when pushed by a slime/honey block before breaking

If any colour bed (except red) is pushed by either a slime or a honey block it will momentarily change texture to a red bed.

Steps to Reproduce:

1. Build this:
   
2. Flick the lever
3. Observe the bed

Observed Results:
The bed turns red before it breaks.

Expected Results:
The bed should not turn red.