[OpenStreetMap] #4959: Map freezes when moved too fast

[OpenStreetMap]

#4959: Map freezes when moved too fast
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 Reporter:  Michi    |      Owner:  rails-dev@…
     Type:  defect   |     Status:  new
 Priority:  minor    |  Milestone:
Component:  website  |    Version:
 Keywords:           |
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 Hi,

 if I move the map on the website too fast (in terms of mouse clicks, not
 of movement speed), the map freezes and is not moveable anymore. I think
 this looks like a problem with events: The cursor icon is still the same
 icon which is displayed, when the mouse button is clicked for movement
 ("closed hand"). Probably some function didn't recognize the onmouseup
 event.

 The zoom function (mouse wheel) and double click feature are still
 working, though. I first noticed this issue since pull request 378 went
 live, but I don't know if this is just coincidence.

 The issue can be fixed by reloading the site.

 I'm using XP with FF 23.0.1.

 Steps to reproduce:
 - Click really fast and move the map only about 50 px at once.
 - After about five clicks the movement stops and the closed hand cursor is
 displayed.

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Ticket URL: <https://trac.openstreetmap.org/ticket/4959>
OpenStreetMap <http://www.openstreetmap.org/>
OpenStreetMap is a free editable map of the whole world