Exponent text at the bottom of the screen still shows even when hideExponentText is true

Exponent text is still showing even I set hideExponentText to true. The following is my app.json:

{
“expo”: {
“name”: “Zenwallet”,
“icon”: “./app/icon_logo.png”,
“version”: “1.0.0”,
“slug”: “zenwallet”,
“sdkVersion”: “18.0.0”,
“ios”: {
“bundleIdentifier”: “com.paymentsource.zenwallet”
},
“android”: {
“package”: “com.paymentsource.zenwallet”
},
“loading” : {
“icon” : “./app/icon_log.png”,
“hideExponentText” : true
}
}

}

hello! can you provide more information? is this locally or deployed to expo.io? standalone app?