R2-D2 Disappears in Conquest

I’ve encountered this bug 3 times so far. I start a battle on a node with R2-D2 — such as a Jedi Training Rey team — and R2 uses the smoke screen, then disappears. He doesn’t stealth, mind you; he’s gone. The battle completely stalls out after that. I had to choose a different node to bypass it, but still lost a bunch or energy.