"What do you dislike about React Native Paper?" November 2019 Edition

We, the React Native Paper core team, would like to get a current list of all the things that people are having problems with when using React Native Paper. This is first time we are running this community feedback gathering initiative, but we are planning to do it cyclically - twice a year. We hope this will help us better understand our users and prioritize the work for the upcoming 2020 year.

Please reply with all the issues that you are having with React Native Paper. Keep your descriptions short and ideally link to other places with more context. Feel free to mention not just technical things but rather any issue that can be ascribed to the React Native Paper project.

If something has been mentioned already, please use the upvote/emoji buttons instead of repeating the same thing so that it's easier to see how many people care about each issue. Please make one comment per topic so that people can upvote just one thing at a time.

## Hypothetical Example:
### Some of the animations are not native
That would be really nice if js based animations (e.g. Checkbox or RadioButton) were replaced with native ones. Please consider reimplementing animations with reanimated for better performance.

## Simple template with header (feel free to copy and paste)
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## Header

### Content

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未指定文件、测试或入口点。在添加一条简短且只涉及单个主题、描述 React Native Paper 问题的评论之前，请先阅读现有讨论，最好附上指向相关背景的链接；完成的标准是记录反馈，供团队在未来确定优先级时考虑。

由索引模型根据 Issue 内容生成。