The week warning triangle went crazy since the 8.3 update. Whenever I change between the dungeons, it's unpredictable what the triangle thinks. For example I look TD, set week3, and then change to Underrot which also set as week3, and the triangle unhappy. Then I change to Siege which is set as week2, and he is perfectly fine with it. His friend, the green marker of the week number is always accurate tho.

As far as I could see the issue arose from moving away from using SetAffixWeek() in v3.0 compared to v2.9 since the OnValueChanged function associated with the affixDropdown is not called when affixDropdown:SetValue() is used.
This fix makes the AffixWeekWarning toggling work similarly to that of the difficultyWarning.

fixed in #141