Render last sample value for trend value tip if sample stream has not been flushed up to the requested time yet
When the chart value tip rendering logic reads subscription history data streams, not all history streams may have been written/flushed up to the point in time where the hairline/simulation time designates.
The best we can do at this point is not to not render any value at all but render the last known flushed value. This should be changed.
This originates from Apros issues 14461 and 12307.
Edited by Tuukka Lehtonen