Orientation of a line_list in RViz2

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I'm creating a line list with a set of points on the XY plane (Z=0). When the message is received, the width of the line is rendered perpendicular to the viewpoint. Each time the marker is updated, it re-renders it perpendicular to the view at the time.

The aim is to get the lines to lie flat on the XY plane irrespective of the viewpoint orientation when the message is received.

In order to get lines that are entirely in the XY plane, I currently have to move the viewpoint high up (distance ~1e06), then send the markers, then bring the view down to see the line (and not update the marker again). Is there a less clunky solution, something simple that I'm missing?

Thanks!