GAMEPLAY - TWISTED TREELINE ALTARS

I was in a COOPvsAI game today playing Teemo with the Omega Squad skin on. At one point I went to lock the altar on the right, but found out that whenever Teemo goes into stealth, it breaks the progress of taking the altar. I know there were a few bugs related to this skin that were fixed a few patches ago. Or maybe it's the champion. Maybe disabling stealth on altars would fix it.