Missing Polygons in Tiles with ComputedSource (GeoJsonSource)

[MAXBAF1]

Hi MapLibre team,

First, I want to express my gratitude to all the maintainers — your work on MapLibre for Compose Multiplatform is truly impressive and greatly appreciated!

I'm using ComputedSource with getFeaturesForBounds to render hexagons over a map in Jetpack Compose. The rendering mostly works, but I'm seeing a major issue: entire tiles are missing polygons, not just small gaps. It looks like some tiles fail to draw any features at all (see attached screenshots).

I've checked my FillLayer and LineLayer setup, and I'm confident that the polygons are valid and correctly returned in getFeaturesForBounds. However, in some tile areas, nothing appears — even though neighboring tiles display the hexagons correctly. Interestingly, in some cases, the polygons eventually appear after some time, as if the tile rendering is delayed or re-triggered later.

Question:

How can I fix this issue and ensure that all tiles reliably display their polygons?

Thanks in advance for your help!

---

Screenshots illustrating the issue:

---

[sargunv]

I see your screenshots are on Android. Have you tried the same on iOS, and if so did you experience the same result?

[MAXBAF1]

At the moment, I'm only developing for Android, so I don't have the ability to test or run the app on iOS.

[sargunv]

This could be a bug in either Maplibre Native or Maplibre Compose.

Could you share the code that generates your tiles so I can try to repro on my end?

[MAXBAF1]

I doubt that you will be able to reproduce this, but I can create a minimal example later and upload it to the GitHub repository.

[sargunv]

Ah yeah, looks like there's some other libraries involved here. A minimal example I can use to reproduce will be helpful.

[MAXBAF1]

Here is the link to the repository. In this minimal example, the polygons are drawn better, but at the very beginning after the launch, there is still a clipping of the tile border, after some time the polygons are loaded at this point. I recommend logging into the app several times.

https://github.com/MAXBAF1/HexMapTest

[sargunv]

I'm not able to reproduce with your sample project; it seems all the hexagons are loading for me. Could you share more details, like the device, Android version, LogCat content, etc?

Screen_Recording_20250730_022500_HexMapTest.mp4

[MAXBAF1]

Thanks for checking! Here are the details from my side:

• Device: POCO X7 Pro
• Android Version: 15
• LogCat Snippet:
  logs.txt

At the very beginning, as soon as the app started, you don't see any emptiness? Do you have cells at once?