Lotus notes MAC application not closing

Hi,

I have installed NOTES V9.0.1 MAC 64BIT on MAC laptop with macOS Sierra version 10.12.1, the application runs; problem I am having though is that I cannot close the application. I need force quit the application.

Please help. Thanks!

Subject: You may need to upgrade your system, notes and jvm

Please upgrade the Mac to the latest OS update, Mac Notes to the latest IF, as well as jvm.