When you open the “Publish to Roblox as” menu with a smaller window size, it will break and become unusable until you adjust the size.
Once you adjust the size, you’re able to shrink it down to whatever size until you restart studio. I don’t know why this happens, but for smaller screen sizes, this will happen by default when you open it up.
When this first occurred a few years ago, I had no idea how to fix it. I assumed it was a glitch and tried reinstalling and restarting Studio, but it wasn’t until a few days later that I realized resizing it fixed it. It appeared to have been fixed some time in 2022 but is happening again.
This isn’t a huge deal for me because it’s easy to fix, but for new MacOS Studio users it might be difficult to diagnose the problem.
Does anyone else have this issue? I don’t have access to the bug reports category but I’ll file an official bug report alongside this post.