Hi bhalicki ,
First , let's discuss your problem, why we recognize it as a desgin rather than a bug. Because the matrix has a hierarchical structure and the sorting is based on Column 1, in your hierarchy there is only one row of data, so it can't be sorted. If we modify your sample to have multiple rows of data, you can see my picture below:
About the status, I understand your concern, but the issue forum is intended to help users submit bugs or fix temporary issues with existing features.
For features that are not supported in the current version, we can't send your comments and suggestions to the product team, as I mentioned in my comment above, you need to go to the idea forum to ask other users for their opinions and add details, that's the channel where PG really understands the users' needs.
According to our policy, for such unsupported features, since the issue engineers are not able to provide more support, we are required to change the thread status and direct customers to the idea forum. The delivered status is to let other users know that this is a design issue and not a glitch.
Since this is the place for bug reports and not for technical development, PG encourages users to go to the idea forums to discuss feature improvements. Sorry for any inconvenience.
Best regards.
Community Support Team_Caitlyn