Re: No ...
I was hoping someone would finally point out that even MS Office can't correctly open MS Office documents without screwing the formatting.
Only since 2010, when they correctly implemented their own ISO standard, has it been fixed. And since Open/Libre Office have also implemented that standard (ironically before MS), things have been pretty sane between platforms.
The last time I had formatting go horribly wrong in Open Office was about 2004. Some minor issues crop up from time to time, but usually dealing with old .doc/.xls files.