Save Window is Fullscreen, Not Resizeable (Edit: Was a Windows 10 Issue)

Whenever I save anything (in Rhino 6, Rhino 7, and Rhino 8), my save window is almost fullscreen and I cannot resize it. I just assumed it was the way the devs intended Rhino to work. But today, I watched one of the devs using Rhino and the save window was a normal window on his computer.

I get a sizing handle, but it doesn’t do anything. I’ve had this issue for years, btw, before Rhino 8 was ever even a thing. However, I think there was a time when it worked normally for me.

(One thing that might be the cause is I have opened files made in older Matrix versions on my computer. Is it possible some weird setting was triggered by those files? But I don’t know, that’s just the only thing I can think of.)

So I was wondering if anyone else is having this issue (It’s a small if slightly annoying issue) and is there a way to fix it?

When I first made this post, I thought it was a weird Rhino bug…possibly somehow related to the Matrix plugin because I opened a file created with Matrix on my home PC, and the work PC and my home PC both did this.

Today, again annoyed with the massive Open/Save window, I wondered if it might be a windows issue and typed a more general search into Google. Sure enough, Windows 10 seemed to have a problem in the past where some random apps would start having massive almost fullscreen non-resizable Open/Save dialog windows. It was fixed in an update, but that only prevents it from happening again. You’re stuck with the oversized open/save windows unless you delete a specific entry (or entries if more than program is being affected) from the registry with regedit. Using regedit always makes me nervous. But it worked and I now have a normal open/save dialog window again. I’ve had this issue for years, and honestly thought it was just how Rhino was until I saw some tutorial on the Rhinoceros YouTube channel where someone had a normal-sized open/save window.

I’m not sure how McNeel feel about posting a solution that involves directly editing the registry. So, unless someone from McNeel specifically requests I post the solution here, I’ll leave those details out.