Then please check whether you have APE tags in the files and see the settings in Tools>Options>Tags>Mpeg and whether you read APE tags.
If both is true, then you see the phenomenon that APE tags overrule the display of ID3 tags.
For a test: Switch off reading APE tags and re-read the files again. All other tag data should then appear.
Simply displaying these tags like you mention in other software is not the same as editing and saving them. If this was the case, what format should rule? What about the other apps that do not support APE? You can't just apply one brush here. I guess when the source and details aren't very clear, you may need to dig a little deeper into fixing them to show as you would prefer.