Sorting by Completion Time

This is happening because you have multiple values in one column that are identical and trying to sort them by different completion times. For example, take a look at the '30 Day - Additional Support Needed' table. In the 'What can we do to provide additional support to improve you experience?' column, there are 2 identical values, "change my schedule". Both of those values have different corresponding Completion Times.

To solve this, I would go to PowerQuery (PQ) and create a couple of new column in those tables that you can sort by. Start by clicking on the Transform Data button to get into PQ and go to the tables you need to edit. Using the same table as an example, duplicate the 'Completion Time' column and change it to decimal type. You will delete this column after we create the next column. For the next column, from the Add Column tab click on the Custom Column button. Give it whatever name you want, maybe something like "ColumnSortID". Type in this formula:

Number.ToText([#"Completion Time - Copy"])&[#"What can we do to provide additional support to improve your experience?"]

Change it to text type, delete the previous column created (Completion Time - Copy), hit the Close & Apply button in the Home tab and wait for the changes to load.

Now, you can click on the 'What can we do to provide additional support to improve your experience?' column, under the Column Tools tab click the Sort by Column button and choose the new column we created.

I hope this helps!