Messy code in the terminal after reopening JupyterLab

Description

After reopening Jupyterlab in the browser, there is something like messy code on the terminal that was used before. Sometimes, it can be longer with '0000/0000/' or 'ffff/ffff/'.

Reproduce

1. Launch Jupyter Lab from the command line and open it in a browser;
2. Execute some Linux commands in Jupyter's pseudo terminal, especially those related to read and write operations;
3. Close the JupyterLab browser interface, and then reopen it;
4. Then the messy code appears.

Expected behavior

I think the messy code may be caused by incorrect output from jupyterlab or related dependency packages, but I don't know the specific reason