Setup

• OS: Ubuntu 20.04.4
• mongod --version
  db version v6.0.16
  Build Info: {
      "version": "6.0.16",
      "gitVersion": "1bbe71e91a41b097b19d036dee47b861b3f27181",
      "openSSLVersion": "OpenSSL 1.1.1f  31 Mar 2020",
      "modules": [],    "allocator": "tcmalloc",
      "environment": {
          "distmod": "ubuntu2004",
          "distarch": "x86_64",
          "target_arch": "x86_64"
      }{}}

Step to reproduce

Exactly same as in NODE-4783.

Issue

After mongod1 becomes PRIMARY again, find() requests stuck for up to 20 seconds.

NODE-4783 was fixed for driver 4.x and it works properly, new issue found in 6.12.