I just updated to the latest version of LO (220.127.116.11) on my iMac (OS x 10.10.5) in an effort to fix an issue with page background colours. That issue is the same, but now I have a new one!
All the text I’ve made italic in my Writer documents is showing up as regular. The italics icon is highlighted, but the text looks straight. This is also true when I print the doc. I’ve tried .doc. .docx and .odt file formats: no good. The same is also true of bold and underline (strikethrough, sub- and superscript work fine though). Changing font doesn’t work unless it’s to TNR (which I hate!).