### Steps to reproduce

1. Create a new live document or open an existing one

2. Copy and paste a large ASCII art text block ([e.g. this one](https://asciiart.website/art/1823))


### What is the buggy behavior?

* Browser freezes / document crashes

* Live document becomes permanently inaccessible.


### What is the expected behavior?

1. Content properly pasted.


Begin of the deletion ### **Logs**

### Screenshots and other files

_If you have screenshots of the application's bug behavior or other relevant files, please drag them into this place or attach them using the "Files" section._

### Environment information

_Please check and fill out the following details to help us identify in what versions and distributions of OpenProject the error occurs_

End of the deletion **OpenProject installation type**

* Hosted cloud edition

* Packaged installation

* What distribution?

* Docker All-in-one container

* Docker-compose installation

* Other (please specify)


**OpenProject version**

_OpenProject edge (17.0)_

**Browser**

* [x] Chrome
* [ ] Firefox
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

* [x] Windows
* [ ] Mac OS X
* [ ] Mobile iOS
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)

Begin of the insertion<br>End of the insertion Begin of the deletion **Language**

_Please specify the browser language and the language of the OpenProject user for which the bug occurred._End of the deletion