Phone/MTP device doesn't have data in columns

My phone in Directory Opus is accessible as MTP device. My problem is that all other drives show the full data in their columns, but the phone named "thor" is empty throughout:
2017-08-24 21_17_40-F__

When navigating inside, though, the internal storage and SD card show their stats fully:
2017-08-24 21_17_56-F__

Why can't DO use the data from there and combine it for display in the upper level drives view?

This is not a bug. The phone contains two disks which Windows shows as a single device in the This PC level and you have to drill down into it to see the two disks. The same is true in Explorer.