I as hoping there would be more information but unfortunately it doesn’t seem like there is much. I’m assuming that when you say that you “enable the viewport”, you mean that you had the Viewport window closed and then opened it from the “Windows” menu. Is that correct?
As this seems like a content related issue, would it be possible to get a copy of the project itself, preferably one of the older versions that didn’t freeze? This way I can ensure that it worked previously before converting it and attempting to reproduce this issue. If you would like to keep it private, you could send a link to the project to me on our through a private message.
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