I believe this was a theatrical first for me last night.
Maybe 30-40 minutes into Act 1. There is a scene with the family in the kitchen. Conor grabbed an old fashioned glass milk jug, then it looked like someone lightly bumped into him, and he dropped it. It shattered, with a thick milky substance and glass spraying out on the stage. The actors played it off, and I assumed it was intentional. Then I thought to myself, that's a lot of glass. The stage manager quickly came on the mic to call the actors offstage and the crew on to clean up.
As we were all watching, it didn't seem like they were able to 100% get everything up with the tools they had. I'm pretty sure I saw one of the crew react to cutting themselves on the glass. The stage manager then called a 15 minute intermission to fully address the situation, which they did. I was hoping that this would take the place of the scheduled intermission, but that 15 minutes occurred as well.