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The support team may request you a different configuration if more information is needed.
Q: After a few minutes/seconds of user inactivity, keyboard and mouse stop working on virtual desktop / flexVDI Client disconnects
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A: The connections between flexVDI Client and the flexVDI Hosts that serve the virtual desktops are encapsulated in websockets that use https. In the datacenter, it is common that these connections go through a reverse web proxy that can drop inactive connections. For instance, a nginx web proxy with default configuration closes connections that have not had traffic for more than 60 seconds. Firewalls can exhibit the same behavior.
Keyboard, mouse, display, ... use separate connections to the guest, so when user stops typing in his keyboard, that socket stops sending data and can be closed due to inactivity by the proxy/firewall, although screen connection can be kept if a on-screen clock keeps updating screen image and generating traffic in that connection.
If this is your case, you can configure your network infrastructure to stop dropping these connections.
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