Mouse capture dysfunctional in VirtualBox and with Emulators on lubuntu 18.04 as Guest OS

[guiverc]

Sorry this may not have good a complete answer.

Lubuntu 18.04 is now end-of-life

• https://lubuntu.me/bionic-eol/
• Lubuntu 18.04 LTS End of Life (30-April-2021)
• Lubuntu 18.04 LTS is nearing it's EOL (end-of-life)