I am making some content for my youtube channel and have a few sections that I think would work well as short vertical content from a series I am doing.

I changed my project settings for a 9x16 aspect ratio and everything broke. If I try and edit anything, whatever was in the preview before it stuck as a still frame and does not reflect any changes I make. The audio is fine, and the frame counter shows that Vegas thinks it's playing back content, but it's not. I tried loading into a different project but the preview just went black and would not display any video. So I shut down, restarted my pc and Vegas continues to work fine with traditional 16x9 content. If I make a new blank project and start it as a vertical orientation, things work up until I add any effects or do anything beyond a simple cut.

I am using VP 21 build 315, I was able to make vertical content before a few months ago without issue on this exact build so I am at a loss as to why it now no longer wants to work.