Bug: In classroom Preview does not show up

# 🐛 bug report

## Preflight Checklist

- [x ] I have read the [Contributing Guidelines][contributing] for this project.
- [x ] I agree to follow the [Code of Conduct][code_of_conduct] that this project
adheres to.
- [x ] I have searched the issue tracker for an issue that matches the one I want
to file, without success.

## Description of the problem
When i try clicking on the preview button to see my work, it works.. If i close it and try to open it again. It requires me to click twice
before it responds.

## How has this issue affected you? What are you trying to accomplish?
Double clicking something before seeing the expected results is not a nice UX.

### To Reproduce
Click on the preview button, close by clicking on the close button. Try to open it again ( nothing happens), try the second time ( works ).

### Link to sandbox: [link]() (optional)

### Your Environment

| Software | Name/Version |
| ---------------- | ------------ |
| Codemarka | |
| Browser | Chrome |
| Operating System | Windows |

[code_of_conduct]: https://github.com/codemarka/codemarka-client/blob/main/CODE_OF_CONDUCT.md
[contributing]: https://github.com/codemarka/codemarka-client/blob/main/CONTRIBUTING.md