topic Re: Flashing Flow Renderer after version 5.0 in ArcGIS JavaScript Maps SDK Questions

Flashing Flow Renderer after version 5.0

JonathanDawe_BAS — Tue, 03 Mar 2026 10:06:13 GMT

I recently did an experiment with flow renderers from a COG imagery tile. I see that in version 5.0 of the ArcGIS API there are new improvements to the behaviour of the renderer on moving the map.

Unfortunately on changing to version 5.0 I'm now seeing strange flashing of vector flow symbology on "no data" parts of my COG.

Before (4.34): https://codepen.io/Jonathan-Dawe/pen/XJKGmmg

After (5.0): https://codepen.io/Jonathan-Dawe/pen/YPGymvw

Is this a bug with the renderer, or an issue with my underlying data?

Re: Flashing Flow Renderer after version 5.0

JonathanDawe_BAS — Tue, 03 Mar 2026 10:24:04 GMT

A workaround I have at the moment is to add some kind of opacity visual variable...

field: "Raster.Magnitude", stops: [ { value: 0, opacity: 1 }, { value: 100, opacity: 1 }, { value: 100.1, opacity: 0 }, // anything above this → fully transparent { value: 9999, opacity: 0 }, ], },

Re: Flashing Flow Renderer after version 5.0

AnneFitz — Tue, 03 Mar 2026 13:53:48 GMT

Hi @JonathanDawe_BAS - this seems like a bug. We'll investigate. Thank you for letting us know!

Re: Flashing Flow Renderer after version 5.0

AnneFitz — Fri, 06 Mar 2026 20:07:06 GMT

@JonathanDawe_BAS this issue was fixed in today's patch, 5.0.10! Let us know if you are still running into any issues.