Had no bad batches at home scale, but quite often get these events, when even replacing the lock with an open fermenter does not help. Only regular cleanups work.
This is extra notorious escapee, witbier (OG 1065) made to dump frozen berries that remain in my freezer. And my very vigorous yeast.
plactagonic@sopuli.xyz 15 hours ago
Yes it is quite common problem. It can be mitigated a bit by lowering the temperature.
It is fun and games until temperature controller on 2 m³ tank brakes and you have to clean foam everywhere.