Capturing pcap traffic breaks

Reproduce:

Connect Hue
Open screen to capture traffic
Start capture
Observe bytes captured increasing
Wait, get a coffee
Come back to see an error message:

Error starting capture: "\r\n504 Gateway Time-out\r\n<body (...)"

Note: After the error, the screen still says 'Running' in green. However, nothing more gets recorded. Also, downloading the pcap gives a valid file.

Note: After error, stopping the capture results in an error: "AMQJS0011E Invalid state not connecting or connected."

SIDN / spin