This is correct. They started with it open the other day, closed it mid game due to weather and then opened it again as soon as the weather passed. First time they ever did that.I think it has to do with Covid. The capacity is higher with the roof open.
When the roof is closed, they need to open all the exits for proper ventilation.
Also I was at the game last night. I love this ballpark and I see no reason why they need tear it down and build a new one. It's iconic and beautiful and is a great atmosphere for baseball. I'd hate to see it go.