Memory Leak

🐛 bug report

Preflight Checklist

• I have read the
  Contributing Guidelines
  for this project.
• I agree to follow the
  Code of Conduct
  that this project adheres to.
• I have searched the issue tracker for an issue that matches the one I want
  to file, without success.

Description of the problem

when i open my sand box in a separate tab using .csb.app url the tab crashes after a while , checked the memory tab and found out that the heap size is increasing in 15+Mb each second reaching 1Gb+ then crashing.
this wont happen in the editor embedded iframe , idk what is the difference,
after looking at the snapshot it was mostly strings(65%+ ,package licenses loaded multiple times) and system objects.
i found out that this doesn't happen with Edge browser , this happens with chrome (Version 87.0.4280.66 (Official Build) (32-bit) and (64-bit)) .
this basically happens with any template i tried react and vue
screenshot:

Link to sandbox: link (optional)

any template will do

Your Environment

Reproduce the leak by opening any React or Vue sandbox through its .csb.app URL in Chrome and monitoring heap growth, then compare it with the embedded editor iframe and Edge. Done means identifying the repeated package-license or system-object allocations and preventing the standalone tab from growing until it crashes.