The configuration of the Stats saving function cannot be saved.

[XunJiJiang]

I modified the configuration here and saved it. Then right-click the application and click Exit to close KeysPerSecond. When I open it again, the old configuration is still there. I didn't find this problem when I used version 8.4. Recently, I upgraded the version first to 8.6 and then to 8.9. At this time, I found that the configuration could not be changed.