I have no issue when writing a doc from scratch with Writer. When loading word docs I occasionally run into issues.
I am currently looking at a large word doc that extra blank lines get added to. Normally I could fix this by backspacing a line and doing shift enter. With a large document, this is not practical. I have tried all the line spacing controls and none address the issue. I tried to upload some images, but I guess Noobs are not allowed to.