Billing Record - Hours aren't being added to the billing record when we try to add them

The issue is when trying to add hours to the billing record. You can add hours and it allows you to select the hours you want to include in the billing record. The billing record shows the correct amount when we save it, but when you go back in, there are NO hours pulled in. There is an error message that says "Where'd everything go? Looks like you might need to adjust your filter" even though it looks like the hours were pulled in. Then when you try to add hours they are still sitting there waiting to be selected. Does anyone know what is causing this? This is time sensitive as we're in the middle of year-end billing. Any help would be appreciated!