Cells running out of order after a copy and paste

[jbwhit]

Description

I used "C" and "V" to copy and paste two cells, and following that, the flow became broken around these cells. The cells were run "out of order" from their visual . Here is a screenshot of the notebook that I ran using + from the top down. You can see the out of order Input markers as the order that these cells were run.

But, it probably makes more sense to see what's happening in a video, so I have a video demonstrating what I see here: https://youtu.be/RRl8iqGzYag

Reproduce

I cannot reproduce this, and I've tried many different times. This has happened to me several times before, but I can't get it to reliably occur. I have this notebook still open for now, and can run diagnostics on this if it would be helpful to know something more from this session.

Expected behavior

I expect that the cells "know" their position in the webpage, and so what is next and previous corresponds exactly with the vertical position in the notebook.

Context

• Operating System and version: Mac OS 14.3
• Browser and version: Firefox 122.0 (64-bit)
• JupyterLab version:

IPython          : 8.21.0
ipykernel        : 6.29.0
ipywidgets       : 8.0.4
jupyter_client   : 8.6.0
jupyter_core     : 5.7.1
jupyter_server   : 2.12.5
jupyterlab       : 4.1.0
nbclient         : 0.8.0
nbconvert        : 7.14.2
nbformat         : 5.9.2
notebook         : not installed
qtconsole        : not installed
traitlets        : 5.14.1

Browser Output

Here's a screenshot of my Javascript console if that helps:

[krassowski]

Thank you a lot for reporting @jbwhit! This could be the same issue as #15610. Do you have the full Notebook windowing mode enabled, or are you using the default defer?

[jbwhit]

Looks similar, do not use the full Notebook windowing mode as far as I can tell. I spent a couple of minutes trying to find documentation on that:

but I'm not aware of how to enable that option (or what it is, exactly).

[krassowski]

@jbwhit

The documentation you are searching is cross-project. JupyterLab docs are on https://jupyterlab.readthedocs.io/

[jbwhit]

Thanks for the tip. I can confirm that I'm using the default defer and not using full.

[krassowski]

@jbwhit I believe this should be fixed now. Can you test a 4.2.x version to confirm?