Because the math course I wanted to take for 2nd semester got full, I picked it for the first sem. I originally planned to take microecon for 1st sem, because according to Mastertimetable, microecon classes of 2nd sem occur at the same time as physics 1l03, another elective which I plan to take. So because I can only have 1 elective the first term and 2 electives for the other term, I signed up for math (1st term) and physics 1l03 + microncon (for 2nd term). I then clicked "Verify Changes & Check Conflicts," and nothing turned up for the column under "Conflict Indicator."

Does this mean the conflict indicator is not working properly? And if I do leave my timetable like this, what happens when the 'official' timetable is released afterward?

Thank you!

the conflict indicator only indicates conflicts once your timetable is released (as some classes have several sections in 1 term). Right now, it only checks for prerequisites for the course, not the actual sectioning.

But since you know they conflict, I recommend you get some backups in line so you can start switching it up.