Displaying HTML in a Jupyter Notebook leads to issues with TimeTravel AND filesystem

[novoselt]

I had a cell in a Jupyter Notebook with

from IPython.display import HTML
display(HTML(f"<h1>HTML Header</h1>"))

In TimeTravel it renders an iframe with my whole account.

Also I got a tab open with a file "h1>" corresponding to "https://cocalc.com/projects/35dd0d93-f702-4bd4-90dc-f5a3c2117ba2/files/tests/%3Ch1%3EHTML%20Header%3C/h1%3E" and displaying

Error: command ''hexdump' (args=-C -n 512 tests/<h1>HTML Header</h1>)' exited with nonzero code 1 -- stderr='hexdump: tests/<h1>HTML Header</h1>: No such file or directory hexdump: all input file arguments failed '