Workspaces won't refresh the proper preview

Hey, so recently whenever I've tried to work in workspaces, the first time I preview, everything works. But if I make any changes, save, then go to preview, it's exactly as it was before the changes. At first I thought it was just something wrong with my code, but if fork it into a different project, the changes show up. But only the first time, then the problem repeats itself in the forked project. I've also tried creating new projects entirely, but the same problem occurs. I have a rather old and slow computer, and wonder if that may be the problem. Though, it used to work fine up until recently. Any advice would be appreciated, thanks!