This bug report is meant primarily for documentation / known-issue purposes. A line in the release notes should suffice for resolution.

Report from customer, verbatim except for minor redactions:

— When editing topology maps in manual mode, the icons of the moved nodes remain in a "strange" colour state, it seems to me in the colour of the highest alarm for this node, see attached file "topology_with_strange_coloured_node_icons.PNG".
— As editing topology maps with alarms and link state "on" is quite slow in a big environment I turned both off.
—  Now when I move a node icon the icon is vanishing after moving it. The connections still remain visible, see attached file "topology_with_missing_node_icons.PNG"
— I think both problems have the same root cause, so I just opened one ticket for this.

Customer follow-up report indicates only some IE versions exhibit this problem:

— Browser: Internet Explorer 11 Version 11.0.9600.18738 Update Version 11.0.44 (KB4025252) shows the problems described in the ticket.

— Client: Windows 10 Microsoft Edge 25.10586.672.0 Edge HTML 13.10589 Working without any problem in topology map

— Browser: Internet Explorer 11 Version 11.1007.10586.0 Update 11.0.44 (KB4025252) shows the problems described in the ticket.

— So obviously only IE (at least in Version 11) is showing this problem. I'm afraid that is nothing you can work around. Made some further investigations: - the vanishing icons appear (or better disappear 😉 only when the checkbox for "Alarm status" is not checked - the problem is completely independent from the "Link status" checkbox - the vanished icons are appearing again after pressing the "F5" key to refresh the browser page