Since 2013, the non-proprietary, metric-compatible alternative fonts are no longer guaranteed the same paragraph layout, because MS Word 2013 and later introduced a new default line breaking algorithm for justified text. To fix the lost interoperability, the same algorithm has been implemented in Writer to reduce spaces within justified lines by up to 20%. tdf#119908 blog post (László Németh, donor: NLnet).
Fixed an issue with shape positioning in DOCX import for RTL paragraphs (Miklos Vajna, Collabora) tdf#160833
As it is nice opening a document and having the line breaks and figures at the intended places, it can be concluded that there is noticeably development going on for compatibility between LO Writer and MS Word.