connection to web interface closed frequently RRF 3.5.2 und 3.5.3

[AlexKid007]

Description

Description

The webinterface frequently lose the connection to the printer
first observed with RRF 3.5.2 but still present with RRF 3.5.3
last known working RRF was 3.4.5

Versions

Duet2 Ethernet with Duex5: RRF 3.5.3
Duet Web Control: 3.5.3
PanelDue 7i: 3.5.0

Process

1. open web interface for printer
2. do some movements of axis
3. trigger a message or warning on printer display like extrusion warning (drive not driven because its heater temperatures were not high enough or it has a heater fault

Experienced Result

freqently disconnect of webinterface as long as the message appears on printer display

Expected Result

no disconnect of webinterface