Device dots continuously get swapped between each other

[marcomicera]

Bug description

frontend's chart page shows devices (red dots) being continuously swapped between each other. I can confirm it is just a graphical issue: when hovering, I can see that their MAC address is still the same after the glitch.

This glitch repeats itself over time, but I cannot tell whether there is a specific event that causes red dots to get swapped.

Reproducing the glitch

This can be reproduced by replaying the bigroom/fixed-avg-rssi trace. This shows how to replay a generic trace, while this contains a description of the aforementioned trace. Please remember to use the appropriate config.json when replaying the trace (copy it to the core server directory).

[marcomicera]

Fixed by fddca4f.