Code folding triangle overlaps code for cells in reloaded notebooks

[abprice]

The code folding triangle overlaps the code text it corresponds with and there is no vertical line separating the gutter from the rest of the code cell when a notebook is reloaded.

New cells render the code folding triangle and vertical gutter line as expected. The issue is resolved in preexisting cells if the toggle line numbers extension is activated.

Could this be due to a conflicting extension?

[jcb91]

This is (I think) also what's behind #982. I've seen it in the past, but it seems to be working ok for me at the moment in notebook 5.x. This may be a result of the notebook version, or (as you mention) it may be a result of interactions with other nbextensions.

What versions of notebook and the nbextensions repo are you using? What other nbextensions do you have enabled? Does disabling any of them fix this for you?

[abprice]

I get the issue for both notebook versions 4.3.1 and 5.0.0 (different conda environments).

I have tried disabling all extensions other than codefolding (in notebook 5.0.0), but the issue persists.
I generally have the extensions shown in the attached image enabled.

[jcb91]

Ok. I guess you're using the latest conda release (0.2.7?) rather than the repo master? There's a fix in #977 which is likely to fix this for you. You can try applying it yourself if you're comfortable with trying that, otherwise, since you're at least the second person to have run into this, I'll roll another release tonight...

[abprice]

Ya, I am on 0.2.7. I will wait for the release tonight. Thanks.

[jcb91]

Ok, 0.2.8 is live as a GitHub tag and on pypi, conda-forge release to follow once conda-forge/jupyter_contrib_nbextensions-feedstock#17 is merged & the resultant CI builds complete...

[jcb91]

and, now on conda-forge also. Closing this as fixed, but obviously please reopen if you find 0.2.8 doesn't fix it for you.

[jetheurer]

I have the same problem running on Linux 4.4.0-77-generic#98-Ubuntu SMP x86_64 x86_64 x86_64 GNU/Linux

jupyter (1.0.0)
jupyter-client (5.1.0)
jupyter-console (5.1.0)
jupyter-contrib-core (0.3.1)
jupyter-contrib-nbextensions (0.2.8)
jupyter-core (4.3.0)
jupyter-highlight-selected-word (0.0.11)
jupyter-latex-envs (1.3.8.4)
jupyter-nbextensions-configurator (0.2.5)

[juhasch]

Sorry to hear that. Unfortunately, there are some subtle race conditions when loading extensions.
Does this happen with a specific notebook (e.g. a large one) ?

[juhasch]

If you checkout PR #1028, you can try setting a delay parameter to see if things improve.