https://bugs.winehq.org/show_bug.cgi?id=45939
--- Comment #4 from showard314@gmail.com --- Update: When you close the game launcher, but keep the client open - all the deleted files descriptors get closed an no new ones are open. This continues even if you leave the game open for a while.
So there is a file descriptor leak when creating file mappings that is present in the eve online launcher that is not present in the game.