I’ve seen a similar issue in the forum, but since it’s not exactly the same, I preferred to create a new thread. In my case, when I close SM, the alpha of the pop-up window remains frozen, even after closing Max. So far, I haven’t found a pattern, it just happens when closing it on the same screen as Max’s viewport, although once it also stayed on my secondary monitor. I’m using the latest beta that’s compatible with Max 2025.