getCenter is not correct after resize the container programatically
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Description
**mapbox-gl-js version**:
v1.5.0
### Question
When the container is resized by css programatically, the center of the map is visually changed. but when we call `getCenter`, it returns previous center of the map. It's the point of breaking consistency until we call `resize`. Cannot just get the center of the literally visible map? or Cannot watch the container size is changing to call `resize` automatically?
### Links to related documentation
https://jsfiddle.net/cs09g/q3x1ohun/17/
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the behavior in the linked JSFiddle using mapbox-gl-js v1.5.0, focusing on the getCenter and resize entry points named in the report. No source file or test is identified, so trace how a programmatic container resize affects the reported center and establish a regression test. Done means the behavior is consistent with the visible map after resizing.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, typescript
- Domain
- frontend, web-dev
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100