Live Updates distort road/building area polygons

[CanopusFalling]

Description

Problems with local vector renderer

• Areas stuck together do not stay so and look very wonky at lower resolutions.
• Roads are rendered twice atop the area they belong to.
• area:highway=turning_circle does not render.
• resolution of areas does not increase when zooming in.

Steps to reproduce

Open OSMAnd app using the local vector renderer. (I used Android downloaded from Fdroid on a pixel 4a 5G but it should be agnostic.)

Head to: geo:53.365266,-1.399299?z=19 (Ravenscroft Crescent, Sheffield, United Kingdom)

Actual result

Expected result

Either have areas stay stuck together or have them not display at all. It does not make sense for them to render like this.

Road lines should not render over the top of road areas, their labels should though.

While I don't love the area:highway=turning_circle tag, it is how it's currently documented so should likely be added to the rendering.

I'm aware of limits to the data compression at play here.

Your Environment (required)

OsmAnd Version: 5.2.13
Android version: 14
Device model: Pixel 4a (5G)
Crash-Logs: N/A

[yuriiurshuliak]

With Live Updates enabled, road/area polygons around Ravenscroft Crescent render incorrectly (areas become “wonky”/misaligned, some polygons overlap or get cut corners, and roads can appear drawn twice over road areas) at close zoom levels.

Checked the same location and could not reproduce these artifacts on the base offline map. However, I can reproduce similar distortions only when Live Updates are enabled for the map.

Steps to reproduce

Steps to reproduce (works only with Live Updates)

1. Open OsmAnd → Search → go to 53.36486° N, 1.39964° W
   Check the house/building area at zoom 19–21.

2. Go to 53.36539° N, 1.39717° W
   Check the road areas at zoom 19–21.
   Result with Live Updates OFF: everything renders correctly (no distortion, no overlaps, no doubled roads).

3. Enable Live Updates for the map and repeat steps 1–2.
   Result with Live Updates ON:

   • At 53.36486° N, 1.39964° W the house area becomes distorted (cut corners / overlaps another area).
   • At 53.36539° N, 1.39717° W road areas appear distorted and the road can look rendered twice.

OSM objects

OSM objects used during verification:

• https://www.openstreetmap.org/way/1460360015
• https://www.openstreetmap.org/way/1460360018

Conclusion

Conclusion

On our side, this looks specific to Live Updates data rather than the base offline map rendering. It may be caused by recent OSM edits included via Live Updates .

Screenshots

OsmAnd~ 5.3.0#6762m, released: 2025-12-24

No Live Updates

With Live Updates

[CanopusFalling]

Oh it's absolutely caused by more recent data, I have been editing the area recently. I did not consider that live edits would change how the map renders. Would probably be a good idea to test somewhere where area:highway has been in the map data for long enough that it's included in the rendering without live updates if you think the live updates are to blame.

[CanopusFalling]

I have since confirmed the problems can be recreated without the use of live updates; all of them have been turned off here:

Screenshot	Location Details
	Location 1 View on: OpenStreetMap Geo URI: geo:51.478909,0.014134?z=19
	Location 2 View on: OpenStreetMap Geo URI: geo:51.477933,0.011728?z=19