Summary: 

I was jumping on a block of slime, using wind change to launch myself even higher. At one point, when the wind load hit the silt block, it failed to explode; in fact, it bounced and went flying.

Observed Results: 

It's kind of difficult to happen, but possible.

From what I noticed, this does not happen with the honey block

I tried placing a block of slime above the projectile when it is slowly flying upwards, and it didn't bounce again, it just exploded..

Expected Results: 
The Wind Charge was supposed to explode when it hits the slime block
Screenshots/Video Attached: Yes