I've noticed this quite odd thing happening which is pretty annoying - not sure if it's a bug or something I'm doing wrong
Say I have a text box with 10mm font. I make a duplicate and make the second one 5mm font. I double click into the 10mm text box, highlight some text, control + C to copy, click out of it, double click into the 5mm text box, then paste, and the font pasted is a completely random font size - definitely not 10mm. I tested it a few times, once i got 8.39mm, the other time 3.25mm