Fórum de suporte - Firefox

How I capture mouse in Firefox? I want to use a cloud gaming service (Xbox cloud gaming) in firefox, but the mouse and keyboard doesn't capture, when i click esc it still exit fullscreen and when i click alt+f4 it stil close the browser, i want to capture mouse and keyboard like in microsoft edge, chrome, etc

estou tendo problemas com o histórico de downloads toda vez que saio do firefox ele e deletado mesmo com a configuração desativa para limpar o histórico de navegação e downloads.