nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

Arbitrary black lines showing on map

JorgeGarcia-Iniguez

Has anyone ever seen this on maps before? The map comes from ArcGIS Portal hosted in a Web AppBuilder app. I can't determine what the lines are associated with. They are not a part of any layers.

Map with black lines.png

ProLegend.jpg

GabrielEnss2-portal-150x150.png

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JorgeGarcia-Iniguez

Thanks for posting about this issue! Do you know, is there any fix for this in FireFox, besides disabling the hardware acceleration?

jordanparfitt1

This was caused by Fire Fox hardware acceleration.

jordanparfitt1

Yep.... firefox

DarelLuechtefeld

Jordan, do you know what browser they are using? We have experienced the same here only on one system and only when running Firefox.

Thanks

jordanparfitt1

I was contacted by a user with this same issue. Did you find a solution?

Thanks!

JorgeGarcia-Iniguez

Just some more information, I see the black lines show up on the actual tiles from ArcGIS Online server.

Here was one tile that showed the black lines. The screen shot is from FireFox network traffic console.

https://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer/tile/13/3255/2137

The lines do not always appear. It seems arbitrary.

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