I'm having the exact same problem so any suggestions would be appreciated. Only difference with mine is Bart actually completed the task and was told he did but its not registering that he did, it still says 0/1 for send Bart to Detention and I no longer have the option to do that.
Yes I stored everything and logged out and when I log back in and put everything back it's the same as now still saying Bart needs to complete Detention.
Well I do think your on to something though because I just tried it again just because I'm stuck and don't know what else to do and now in Krabappels task screen I have the option again highlighted in yellow for her to host detention but nothing showing telling me to send Bart to detention. My task still is showing 1/1 saying she completed her hosting Detention though so I'm more confused now.
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