After selecting for example the zoom level "page fit", if would be intuitive and desirable to be able to navigate the document using the arrow keys. Right now pressing an arrow key (even and especially left/right) changes the zoom level, although you just selected the desirable zoom level manually.

EDIT: the same thing holds for the page up and page down keys.

source: self,
        value: this.value,
      });
    });
    
    scaleSelect.oncontextmenu = noContextMenuHandler;
    this.eventBus._on("localized", () => {
      this._wasLocalized = true;
      this._adjustScaleWidth();
      this._updateUIState(true);
    });
  }
  _updateUIState(resetNumPages = false) {
    if (!this._wasLocalized) {
      
      return;
    }
    const { pageNumber, pagesCount, pageScaleValue, pageScale, items } = this;
    if (resetNumPages) {
      if (this.hasPageLabels) {
        items.pageNumber.type = "text";
      } else {
        items.pageNumber.type = "number";
        this.l10n.get("of_pages", { pagesCount }).then(msg => {
          items.numPages.textContent = msg;
        });
      }
      items.pageNumber.max = pagesCount;
    }
    if (this.hasPageLabels) {