Why are Directory Modification Times not preserved?

[AudriusButkevicius]

It seems it was supported:

Mode and modification times on directories should be preserved

But if you do a quick search on the forum:

v0.9.0 beta testing [beta testing is over]

Beta9 v0.9.0-beta9 fixes bugs and contains smaller tweaks. This will be the last beta. Beta8 v0.9.0-beta8 introduces a faster hasher, slightly reduced memory usage, and more GUI languages (de, el, en, es, fr, it, pt, ru, sv). Beta7 v0.9.0-beta7 introduces a different, forward compatible packet format, compression can be disabled, UI is event driven (quicker to reflect what happens, uses less CPU). This should be very close to a real v0.9.0 release, unless I hear screaming… Beta6 v0.9.0-beta6 …

Beta 3 explains why.