[1.x] Backport #3920

### Current Behavior

See the original issue at https://github.com/flarum/issue-archive/issues/39 and fix for the 2.x branch at https://github.com/flarum/framework/pull/3920. IMO it's a major enough issue that it warrants a back port. However, especially if backwards compatibility is of concern, I understand if we don't want to port this.

### Steps to Reproduce

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### Expected Behavior

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### Screenshots

_No response_

### Environment

- Flarum version: x.y.z
- Website URL: http://example.com
- Webserver: [e.g. apache, nginx]
- Hosting environment: [e.g. shared, vps]
- PHP version: x.y.z
- Browser: [e.g. chrome 67, safari 11]

### Output of `php flarum info`

```
Output of "php flarum info", run this in terminal in your Flarum directory.
```

### Possible Solution

_No response_

### Additional Context

Can this change be backported withou backwards compatibility concerns?

Start by reading the original issue at flarum/issue-archive#39 and the 2.x fix in framework pull request #3920. Compare that change with the 1.x branch and check its backward-compatibility implications. Done means determining whether the change can be safely backported and, if so, verifying the relevant 1.x behavior.

Written by the indexing model from the issue text.