bug#60467: 30.0.50; primitive-undo: Changes to be undone by function different from announced

[Gregory Heytings]

> > Another data point, about the risk assessment aspect: this function is 
> > not used by any package on ELPA, and in core it is only used by Org 
> > (with which this bug was identified), newcomment.el (2 uses) and dired 
> > (a single use, in which the code is in fact bypassed because 
> > buffer-undo-list is let-bound to t in the body).
>
> Which version of Org? the one that's on the release branch or a newer 
> one?

All versions or Org, including the one that's on the release branch.  The 
calls to combine-change-call were added to Org on Oct 16 2021 by 
85e0a69567 (in the Org repository).