Automatically pops back to previous screen

### Version
Tell us which versions you are using:
"react-native-router-flux": "^4.0.6",
"react": "16.9.0",
"react-native": "0.61.4",

### Expected behaviour
i have 3 screens, opt screen, loader screen and home screen
after typing otp code, loader screen opens for a few seconds and then home screen
### Actual behaviour
after typing otp code, loader screen opens for 1 sec and then back to opt screen
At the beginning I thought it was my logical mistake
but no
If i enter otp again everything will work correctly

My code
https://pastebin.com/wxtHtfLj

How to create a Minimal, Complete, and Verifiable example
https://stackoverflow.com/help/mcve

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Please provide a minimized reproducible demonstration of the problem you're reporting.

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