I changed to the default twenty twenty theme, but the blog pages just show each entry completely and in reverse chronological order. There is not excerpt shown and no option that I can find in the customization menu.
Note that I can use the “read more” feature to force a cut off. This is a work-around as it creates an undesirable step that I have to do for every entry. I will note that at times I had trouble even getting the “read more” feature to work but after toggling a couple of times the “read more” feature seems to work now.
