Parent release version has the wrong time remaining. Hour burndown chart is incorrect and it may be because of this

Last night we upgraded from GH 5.1 to GH 5.2. After the upgrade I noticed that the GH hour burndown chart for for our parent version was all wrong. Before the upgrade the chart looked normal. Now there is a large spike at the start and the data shown by "Excel (Chart Data)" does not seem to match the data shown in the chart. I did notice that the time remaining for Release 1.0.0 is now 16w 5h 44m but when I click on it to add a min and max is shows 4w 1d 30m, which is what is should be.