If you mean you can't see the text properties, you have the marker and the text selected and it is showing the properties for the marker in the info box.
Try selecting just the text and you will see the text properties.
Or make sure the text is the last thing you have selected.
I don't have the latest preview build installed (build 6000), so if you have that then possible it is a bug.
There seems to be other problems with that build.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10