I tried to copy paste a text from scrivener to other editors (tried with two different ones), but only the first sentences are pasted.
Those sentences were previously copy paste from an other scrivener text. Perhaps it explain something? And when I try to paste it in scrivener, the whole text appear.

I’m using the 1.8 and windows 7

Don’t get that error myself (Vista, v1.7) but when I paste large blocks of text from Scrivener to Word 2007 I do get an unexplained increase in font size (11 to 12, in calibiri).