As the title says, is it possible to view all of the changes made to an answer post? I have found that clicking on the time stamp of the edit shows a view of an edit. Is this only the latest edit or does it show all of them? Is it possible to stop an edit from being displayed in this window?
That link shows all edits to the question.
The only exception are subsequent edits done by the same author within a grace period (5 minutes, if I remember correctly). Those are are collapsed and only the last of those subsequent edits will show up.
This can be the initial author, so a post might look like it was never edited when indeed it was modified by the original author.
Clicking the view edit link will show every edit made, except for those the original poster makes during the 5 minute Grace Period (and any edits made which came before an edit by the original poster during the 5 minute grace period).
Edits after the first five minutes (or after the first non-OP edit in the first five minutes) will be smushed within 5 minute grace periods for the last editor of any post as well. The grace period smushing, plus suggested edits, can lead to an interesting edit histories.