mapbox / mapbox/mapbox-gl-js

After using the Mapbox Terrain-DEM v1 layer, there will be a hole in Antarctica.

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Dominant language
TypeScript
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Description

### mapbox-gl-js version

_No response_

### Browser and version

_No response_

### Expected behavior

After using the Mapbox Terrain-DEM v1 layer, there will be a hole in Antarctica.

![Image](https://github.com/user-attachments/assets/55eb64ea-1fce-484f-8631-4ee674c177b1)

### Actual behavior

_No response_

### Link to the demonstration

_No response_

### Steps to trigger the unexpected behavior

_No response_

### Relevant log output

```shell

```

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No source file, test, demo, browser/version, or reproduction steps are provided. Start by reproducing the reported Antarctica hole with the Mapbox Terrain-DEM v1 layer in mapbox-gl-js, then trace the terrain-rendering entry point and add a regression test; done means Antarctica renders without the hole.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
computer-graphics, frontend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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