Version

3.0.0

Reproduction link

https://github.com/pearofducks/vue-ssr-memory-leak

Steps to reproduce

1. Run yarn in both the rc5 and gm dirs
2. Run node test.js in the rc5 dir - note the two ENDING numbers reported
3. Run node test.js in the gm dir - note the two ENDING numbers reported

What is expected?

Some memory should be reclaimed by the gm run after the SLEEPING step

What is actually happening?

No memory is reclaimed

This is my best approximation of what we're seeing in a much more complicated SSR environment. When we change dependencies (and only the Vue-specific dependencies) from the 3.0.0-rc.5 release to 3.0.0 we see a very clear memory leak.

Thanks for the boiled down repro!