Hello,
this bug appeared after the update. I've checked the last couple of forum pages as well as the resolved bugs section and couldn't find any similar topic. So I hope I don't run in any open doors.
When I have two different textframes, with which I want to create a group, the font size changes drastically as well as the line spacing. This only happens, if you have two textframes with different fontsizes and then only to the text with the bigger fontsize.
So, if you put to textframes in a group with different fontsizes the bigger text will change size.
I couldn't reproduce this bug with the artistic text tool. Only with the frame text tool.
Cheers from Germany
