I'm facing the same issue.
My machine has grabbers with bombs, launched by rockets.
When the bomb explodes, the grabber flames up (???) and hangs for several seconds:
Than they fly back to the launch point (still flaming!) and destroy the launchpad.
But when will it be (update)?
I asked this because I especially want to translate the game to my native language.
Especially I'm worried about the look of the translation (will it be a text file of something other?) because I'm not very good at coding.
I did some tests, and I think I may know what's going on. It seems that the grabber is grabbing a phantom block (possibly spawned by the exploding firework/bomb?) and then following said block to the COM (which it goes to for some reason). But as to the coding reasons why this happens or what causes this, I have no idea.