Saving as .puffin _sometimes_ breaks #248
Description
My repro: connect puffin_viewer to a server with --url 127.0.0.1:8585, hit save, then try to load the saved .puffin in a new puffin_viewer process.
This sometimes works, but sometimes I end up with a broken .puffin file, like this:
- Probably broke in Stream scope information only once #169
- Maybe related to Wrong scope descriptions in puffin viewer when running profiled program multiple times #200 ?