TX switch off with connection failure

After installing a new antennne I found a misbehaviour of the tune knob. I could switch on the TX but not switch off. Obviously the HF disturbes the Ethernet connection, and after a few seconds I get the "connection loss" message on the laptop, But the Flex lamp continue "red" showing transmitting. I cannot check , wether the TX is really transmitting. Problem or Idea?. ... I would prefer, the transceiver switches to a defined RX mode or switch off in case of connection loss. In fact it not a severe problem as long as I use the transceiver in the shack. But one of my major intentions to buy this Flex6500 is to use it remotely via internet. And I also will work on avoiding the HF distortion Some more details: Using the PTT the spectrum view freezes (as expected) My distortion is somehow near the limit. Sometimes the TX switches off after a few clicks of the /MOX button . But afterwards the programm was not stable sometimes -> new start of the programm.