In 'Interface for Editing' I have three chapter markers (beyond the very beginning). In 'Interface for burning' in Edit mode in the Navigation window only one box shows. In your example I'm guessing you have four chapter markers.
Very interesting. Look at the earlier screen shot of the Navigation window and there is no [+] showing. I did as you requested and rather than using the menu system of '(markers)-(set chapter markers)' I did the Shift-Enter. After that the Burn-Navigation window shows a [+] and the Remote works as expected. I think you have a program bug.
. . . . Look at the earlier screen shot of the Navigation window and there is no [+] showing. . . . .
Having a screenshot of the timeline when the project was in that state would have helped identify the issue you were having.
. . . . I think you have a program bug . . . .
If you wish to raise a bug report see this Support article on how to raise a ticket, however you may not get a reply until early next week. Please note that this is a user to user forum not Magix Support.
Unfortunately not, there are no emails to send, the forum is a web based discussion area, the only emails associated with it are the notifications you receive that a comment has been made to your post.
When you go through the Support system there are some questions which only you can answer.
. . . . they are quite different. The project markers require a text entry and do look different . . . .
They are, do not, and do - see the image above I posted.
You do not have to enter any text, though it is useful, just OK the dialog, you will see they are numbered to match the keyboard shortcut to jump from one to the other using Ctrl + number (top row keyboard numbers, not the numberpad). Ctrl + 0 is the 10th marker, 11 onwards do not have a keyboard shortcut.