I have a similar, possibly related issue, though it's on MacOS. Since 2.4, in Publisher, when I open the file I'm working on (~400MB, many linked assets), and perform any action, the UI partially freezes: I can still scroll through the sidebar or the pages, but any actions simply don't happen, like double-clicking on a page in a sidebar to go there, any keyboard shortcut, or anything in the menu. After downgrading to 2.3.1 the same file works fine again. It's a commercial project, so I can't attach the file unfortunately, nor have I been able to isolate it to any reproducible elements, but if there is any logging I can enable to dig into this, I'll happily do that.