Strange graphing in Easy Chart

Hello,

we had telemetry graphing correctly, but now Easy Chart is in a strange mode that prevents us from
showing dynamic telemetry. The graph seems to be ignoring received telemetry (every second) until a
point is plotted every 10 seconds.

Video showing the bad behavior is at https://www.youtube.com/watch?v=InVgyBbmpb0
It is 100% reproducible. We show the telemetry changing, the pen definition, and a Node-RED
graph showing the correct graph.

Video showing the previously good behavior is at https://www.youtube.com/watch?v=SG20F0ndhuc

Can anybody help?

Thank you.