Template is never being cached

[dev-at-sevenlab-nl]

Vue version

3.5.8

Link to minimal reproduction

https://gitlab.com/julie41/demo-ionic-vue-router-unittest/-/tree/main

Steps to reproduce

• go to https://gitlab.com/julie41/demo-ionic-vue-router-unittest/-/tree/main
• Run npm i
• Run npm run test
• Both tests pass with the expected behaviour and logging
• Update vue to 3.3.10 (or higher, currently lts is 3.5.8, but the issue is occurring from 3.3.10)
• Run npm i
• Run npm run test
• The second tests is failing because the component within the ion router outlet is not mounted

What is expected?

I expect the same test output when updating vue to 3.3.10 or higher as when I run the tests with vue 3.3.9

What is actually happening?

Within this commit in vue 3.3.10 caching of rendering has changed. I notice that the render is stored in cache[key] which is not a global variable as compleCache[key] was. The cache is always overwritten in the compileToFunction function and therefore will never be true. This is causing problems in my tests. I'm thinking it is a bug that the render is not assigned to compileCache anymore. Can you fix or elaborate?

System Info

System:
    OS: macOS 14.3
    CPU: (8) arm64 Apple M1
    Memory: 126.83 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.17.0 - ~/.nvm/versions/node/v20.17.0/bin/node
    npm: 10.8.2 - ~/.nvm/versions/node/v20.17.0/bin/npm
  Browsers:
    Chrome: 128.0.6613.138
    Edge: 129.0.2792.52
    Safari: 17.3
  npmPackages:
    vue: ^3.5.8 => 3.5.8

Any additional comments?

No response