Indominus interaction with spark double + winding constrictor

I was playing a commander game with my friend and something went terribly wrong. i tried to play spark double and copy my commander, witch is indominus rex, Alpha and i only got the discard part to work, and then my spark double went into the graveyard for no reason. I tried it again in another game to make sure i wasnt missing something and the same thing happened.

Also, when i played indominus, i had winding constrictor in play witch should make indominus come into play with +1 of all kinds of counters but it only worked for the flying counter and all other were normal. During that interaction, i also had The Ozolith in play and when my counters were move to it, it worked as i should and The Ozolith had +1 for each kind of counter. It also worked fine when i moved the counters from The Ozolith back on another creature. So it seems to be a bug with Indominus only.

Here's a screen shot of the game where you can see the 2 bugs. I would appreciate if you could fixe this but i understand if it isnt done immediately.

I will play my deck again to try other interactions and see if they bug.

Thank you!

Start by reproducing both reported interactions with Spark Double, Indominus Rex, Alpha, Winding Constrictor, and The Ozolith. Trace the handling of copying Indominus Rex and applying its counters, then verify the fix by confirming Spark Double survives correctly and all applicable counters receive Winding Constrictor's increase.

Written by the indexing model from the issue text.