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Lake Maggiore not rendered in blue on maps.wikimedia.org
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Description

Hello,

Something is strange, unlike the others lakes, the Lago Maggiore is not rendered in the usual blue on maps.wikimedia.org, see : maps.wikimedia.org https://maps.wikimedia.org/#11/45.9067/8.6071

(I've looked directly at the tags on OpenStreetMap and the same tag present on other lakes seems to be present too : https://www.openstreetmap.org/relation/11758#map=10/45.9516/8.6737 , so I don't see where the difference of rendering comes from).

Event Timeline

VIGNERON created this task.Sep 18 2019, 6:46 AM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptSep 18 2019, 6:46 AM
Ayack added a subscriber: Ayack.Sep 18 2019, 8:00 AM

Doesn't seem like water area was broken on OSM as then at least zoom levels 10+ would be expected to have some fixed tiles by now. Lake Victoria (mentioned earlier in T231691#5460894) is also still gone. Is this something like T218097 again?

Could this changeset delete 2 duplicated nodes be related? https://www.openstreetmap.org/changeset/74624620

The geometry doesn't seem to be present through geoshapes too http://maps.wikimedia.org/geoshape?getgeojson=1&ids=Q14379

Could this changeset delete 2 duplicated nodes be related? https://www.openstreetmap.org/changeset/74624620

Nope YanikB changes was an attempt to correct the situation after the bug appeared (for info, the discussion started here https://www.wikidata.org/wiki/Topic:V7imq05idkyuq4fo where YanikB said "I have corrected the duplicate segments in OSM, the display should be correct within a few days." so maybe it's still a cache issue and just we need to wait).

Pikne added a comment.Sep 20 2019, 6:00 PM

I didn't notice this recent changeset as I checked the relation earlier. Comparing previous version with current one, it doesn't seem like duplicate segments or nodes were removed, though. I see that two new nodes were created almost in place of deleted ones. Also, while member way segments were altered a little, neither version seems to have duplicate segments. So I doubt if this fix attempt changes anything in regard to validity of this water area. However, previously when some objects were missing I noticed that mere dummy edit (no actual change) to a relation made Wikimedia system to pick up this object. So maybe this fix attempt will have similar effect.

MSantos triaged this task as Low priority.Oct 7 2019, 2:09 PM
Pikne added a comment.Oct 15 2019, 6:25 PM

I doubt if this fix attempt changes anything in regard to validity of this water area.

I think by now it's quite sure that fix attempt on OSM had no effect. Could it be something like T218097 again?

I'd say it has considerable impact, and it probably isn't an isolated issue (Lake Victoria is also still gone.)

I doubt if this fix attempt changes anything in regard to validity of this water area.

I think by now it's quite sure that fix attempt on OSM had no effect. Could it be something like T218097 again?
I'd say it has considerable impact, and it probably isn't an isolated issue (Lake Victoria is also still gone.)

T218097 is reopened and I started a new investigation for a final fix on this issue.

MSantos raised the priority of this task from Low to Medium.Oct 25 2019, 1:17 PM