scrollToLocation in componentDidMount prevents SectionList rendering #21846

Scanning folders for symlinks in /Users/hugh/Documents/GitHub/Oxford-Union/App/node_modules (31ms)

Environment:
  OS: macOS High Sierra 10.13.6
  Node: 8.9.4
  Yarn: Not Found
  npm: 6.4.1
  Watchman: Not Found
  Xcode: Xcode 10.0 Build version 10A255
  Android Studio: Not Found

Packages: (wanted => installed)
  react: 16.5.2 => 16.5.2
  react-native: https://github.com/expo/react-native/archive/sdk-30.0.0.tar.gz => 0.55.4

    scrollToCurrentDate = async () => {
        const { firstLoad, events } = this.state;
        if (!firstLoad) {
            return;
        }

        this.setState({firstLoad: false});

        // Get the section closest to today's date.
        var lastSectionIndex = -1;
        for (var i = 0; i < events.length; i++) {
            const section = events[i];
            if (new Date(section.date) > new Date()) {
                break;
            }

            lastSectionIndex = i;
        }

        if (lastSectionIndex === -1) {
            return;
        }

        const lastSection = events[lastSectionIndex];
        const hasCurrent = lastSection !== events[events.length - 1] && lastSection.date < new Date();
        if (!hasCurrent) {
            return;
        }

        this.scrollView.scrollToLocation({sectionIndex: lastSectionIndex, itemIndex: 0, animated: false});
    }