Richard, You might want to check to see if pulsar is a good replacement for beacon. I had been using beacon for a while and switched recently. I don’t use Jupiter-python blocks any more because of some compatibility issues I experienced because I chose to compile Emacs from the master branch. I found the python blocks met my needs. He is the link to the pulsar package if you are interested. I found it much easier to config what actions cause the line to pulse to find point. https://github.com/protesilaos/pulsar Mark > On May 19, 2022, at 11:16 AM, Richard H. Stanton wrote: > > After a lot of bisecting my init.el to create the simplest possible example that shows the problem, I found that removing the package beacon makes everything work OK, both in sync and async mode. > > > >> On May 19, 2022, at 6:37 AM, Ihor Radchenko wrote: >> >> Richard Stanton writes: >> >>> A bit more experimenting shows that asynchronous execution is actually a part of my original problem. By default, I have jupyter-python blocks running asynchronously. In that case, the tables don’t format quite right, as I noted. But if I add the header ":async nil", the table comes out fine. Table formatting is OK in python blocks with or without asynchronous execution. >> >> Can you also see the problem without using jupyter-python? >> A detailed recipe starting from emacs -Q would help (see >> https://orgmode.org/manual/Feedback.html) >> >> Best, >> Ihor > >