I have noticed the problem, but I basically copy the text of my answer into a Word document and see what needs to be changed. I change it in the eNotes answer only, by flipping between my answer and the Word document. If I try to copy from the Word document back into the eNotes answer "box" (and I have a Mac, if it makes a difference...?), I lose my indentations, italics, etc. So I put them into the original eNotes answer and work only from there. If I copy a section of a poem or text from Hamlet, for example, I put that in Word first for formatting purposes, and then paste into the eNotes document, adding whatever I need in the way of italics (even when I type from a novel) as I double-check. Otherwise, I haven't noticed anything more than that.
I have also noticed that if you hit the "spell-check" button too often, the answer gets locked in never-never land. It acts like it is loading...forever. So before I post every single answer, I copy the content of my answer into an open Word document that I use for spell- and grammar-check. In this way, if I have to get out of the window to get to the posting again, the only thing I have to duplicate are my sources. The spell-check feature can be haunted.