Quests not always shown in different zoomlevels about streetcomplete HOT 14 CLOSED

In my example there was nothing to collide with.

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https://files.natenom.com/public/cs/1.png
https://files.natenom.com/public/cs/2.png
https://files.natenom.com/public/cs/3.png

While making the screenshots I noticed that sometimes (very rare) the quest symbols hide while others appear for maybe 1 or 2 seconds after changing the zoom.

This is here: http://www.openstreetmap.org/search?query=leonberg%20brennerstra%C3%9Fe#map=18/48.79342/9.00717

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I made a screencast. You can see that this problem is everywhere.

https://files.natenom.com/public/cs/cs.mp4

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If the quests would otherwise collide with each other visually, they are not shown. This is a feature of the map rendering library. I can try turning that feature off, but I think the result will not look good.

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Is there any map marker clustering feature in the tangram library like in leafletjs?

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Could you tell me the GPS location or better submit some screenshots? This is an issue in the rendering library in any case (whether it is a bug or a missing feature), so I will send it upstream and see what they think of it.

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I think this is a better example because you see both complete streets in the first screenshot:
https://files.natenom.com/public/cs/a_1.png
https://files.natenom.com/public/cs/a_2.png

This is here: http://www.openstreetmap.org/#map=18/48.79425/8.77753

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I keep hitting this bug frequently as well:
Happens more often with small objects (e.g. short streets). There are no nearby other markers, but still I see those markers only blink shortly when the zoom level of the map layer changes.
I can work around some by carefully pinch zooming to a zoom level where they stay visible so I can tap them.

An example would be the surface quest for "Prestwick Street": https://www.openstreetmap.org/#map=18/51.53106/-0.09363. Try selecting it in the app

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For me the street names seems to be the reason for hiding.

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I have that problem too.

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This problem persists in .7
It's quite confusing in cities.

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In my experience, this bug is worse in 0.7. I didn't noticed it too much on previous version. As @escoand said maybe street names have something with this?

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Just wanted to feed back that since release 0.8 this bug is properly fixed and marker do not magically disappear any longer. Thanks a lot, @westnordost 👏

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