sentry-react-native: Duplicate Breadcrumbs

Environment

How do you use Sentry? sentry.io

Which SDK and version?

• react native 0.61.5
• @sentry/react-native: ^2.3.0

Steps to Reproduce

const dsn = Config.SENTRY_DSN;
const debug = false;
const release = `${DeviceInfo.getBundleId()}@${versionName}@${versionCode}+codepush:${codepushDist}`;
const dist = `${versionName}.${codepushDist}`;
const environment = isProductionEnv ? 'production' : 'staging';
const sampleRate = debug ? 1 : 0.5;
const tracesSampleRate = 0.2;
const maxBreadcrumbs = 150; 

    Sentry.init({
        dsn,
        debug,
        release,
        dist,
        environment,
        sampleRate,
        tracesSampleRate,
        maxBreadcrumbs,
    });

Set those initialization and surfing on my app normally until I get some errors.

Expected Result

breadcrumb data is not logged twice.

Actual Result

Looking at Breadcrumb section, I found that each breadcrumb data logged twice. xhr breadcrumb is logged by default by Sentry SDK. btn_clicked and navigate is manually logged, I mean, my code that logged it. Both of them logged twice.

this is how I add a breadcrumb.

export function recordBreadcrumb(key, message, level = Sentry.Severity.Info) {
    Sentry.addBreadcrumb({
        category: key,
        message,
        level,
    });
}
...
function logButtonClicked(buttonOrFunctionName, value = {}){
   ...
   CrashLoggingUtils.recordBreadcrumb('btn_clicked', buttonOrFunctionName);
}

I’ve ensured that logButtonClicked() only called once a time.