Attach (recommended) or Link to PDF file here:

Configuration:
- Web browser and its version: firefox 96.0
- Operating system and its version: Arch linux, sway (wayland)
- PDF.js version: Whatever came with the browser
- Is a browser extension: no

Steps to reproduce the problem:
1. Open any pdf, can reproduce it on https://mozilla.github.io/pdf.js/web/viewer.html
2. Scroll in with ctrl+mouse wheel using a normal mouse, not a touch pad.

Expected behaviour:
It zooms in with small steps. It can for example be the same steps as ctrl+plus.

Behaviour:
It scrolls in and out way to quickly. It jumps in the steps: 10%, 70%, 150%, 300%, 570%, 1000%.

Notes:
Cannot reproduce on chromium with the web viewer on https://mozilla.github.io/pdf.js/web/viewer.html
};
    
    loadingTask.onUnsupportedFeature = this.fallback.bind(this);
    return loadingTask.promise.then(
      pdfDocument => {
        this.load(pdfDocument);
      },
      reason => {
        if (loadingTask !== this.pdfLoadingTask) {
          return undefined; 
        }
        let key = "loading_error";
        if (reason instanceof InvalidPDFException) {
          key = "invalid_file_error";
        } else if (reason instanceof MissingPDFException) {
          key = "missing_file_error";
        } else if (reason instanceof UnexpectedResponseException) {
          key = "unexpected_response_error";
        }
        return this.l10n.get(key).then(msg => {
          this._documentError(msg, { message: reason?.message });
          throw reason;
        });
      }
    );
  },
  /**
   * @private
   */
  _ensureDownloadComplete() {