A fix for a particularly annoying bug will be coming with the next small patch.
Players have been dealing with this issue in Infernal Hordes since the start of Season 8. The wave counter simply does not update at all, regardless of how many you complete. Luckily it still counts them internally and you do finish when you get to the maximum wave, but unless you’re counting yourself, you won’t know which wave you’re currently on.
Luckily, there’s a fix coming, as Director of Social & Content Marketing Adam Fletcher announced:
We don’t have a date for patch 2.2.2, but it should take long to arrive.
