material styled dialog not showing on android version 7.1.1

- [x] I have verified there are no duplicate active or recent bugs, questions, or requests.
- [x] I have verified that I am using the latest version of MaterialStyledDialogs.
- [x] I have given my issue a non-generic title.
- [x] I have read over the [README](https://github.com/javiersantos/MaterialStyledDialogs/blob/master/README.md) and [Wiki](https://github.com/javiersantos/MaterialStyledDialogs/wiki) (before asking questions on how to do something).

###### Details
- MaterialStyledDialogs version: `2.1`
- Device OS version: `7.1.1`
-Device Manufacture: `MIUI`
- Device Name: `Red mi note 5 pro`

###### Reproduction Steps

1. added dialog in login and home screen, but it doesnt show on version 7.1.1
2.have tested on lower versions and works fine

Start with the README and Wiki, then reproduce the issue in the login and home screens using MaterialStyledDialogs 2.1 on Android 7.1.1 with the reported MIUI device details. Compare the behavior with lower Android versions; done means the dialog appears reliably on version 7.1.1.

Written by the indexing model from the issue text.