[TeMPOraL]

Syncing tools are tricky because they bridge and overlap (at least) two filesystems - local and remote. It's not obvious how to handle symlinks there in general case. The default behavior dictated by filesystem abstraction is wrong (would duplicate files and break links). There are multiple other ways to handle it, but it's not clear what's best.

[cowsandmilk]

Explain what was wrong with Dropbox’s previous behavior (which is described in the link).

[Dylan16807]

"would duplicate files and break links"

And did the previous behavior preserve symlinks that are located inside a folder in Dropbox and link to somewhere else inside the same folder? Because a symlink-blind program would screw that up royally.