On a course, turn on editing and add a new activity of type "External tool" (LTI). Enter at least a name. The settings are not important and the link does not have to work to reproduce the problem.
On the same course, click on the "Add a block" button and chose type Activities.
On the Activities block just added, click on the "External tools" link.
On the index page that is now shown, you can see that the two following items are not correct and are inconsistent with the page for other types of activities :
- The breadcrumb does not show the "External tools" level.
- The course administration menu is present (there should be no menu on this page).