Working Hours not correct on exception days

Regardless of what hours are selected for ‘no specific provider’ or the one other provider (me), exception days always end at 5:15pm…even though I want them to end later.

I have working hours for all options (no specific provider and all providers) set to end at 8pm on Weds/Thurs. All days are set to NO for “working?”. This way I can have only a few days open using exceptions. But when I put the dates in as exceptions, the day ends at 5:15pm, regardless of whether the actual end of day in working hours is prior to or after that time. Please help.