参照:https://github.com/hluk/CopyQ/issues/1590

1.自启动脚本例如:

exec copyq

则需要启用:
copyq->File->Preferences->Layout->Hide main windows
copyq->File->Preferences->General->Close When Unfocused
或者:

copyq config hide_main_window true & copyq config close_on_unfocus true