Tuple elements get duplicated with built-in debugger

[pdawyndt]

I noticed a tuple (displayed as a return value) with two elements, whose elements are shown twice in the graphical representation:

Submission: https://dodona.be/nl/courses/2802/activities/1149379220/
Testcase: tab "Schranken", testcase #1, step 1643 / 1720

[pdawyndt]

In the same debug step I refer to above, there's a list that seems to have a similar issue (but know displayed with a negative index).

Could it be that this bug is due to the way long lists are only shown partially by default (only first and last part shown), but that this optimization is not correctly implemented for short lists/tuples (where e.g. the first and last two elements of a list/tuple with only two elements are actually the same two elements, and thus are duplicated)?

[pdawyndt]

This issue also occurs for lists (and probably for all sequences that now have a reduced notation in the Python Tutor).