The map really looks great, but...
While scoping around with Hunting Scope & ACOG , they go back to 3rd person after 12-13 seconds, i suppose that happens with every scope and is the most annoying thing i noticed
Fir trees have a huge hitbox, trying to hide yourself or barrels in these is kinda pointless
Doors are glitchy as hell. Every door i open to get inside puts be back outside when i go through the door. Waiting a few seconds before going through does help though.
The text of communication channels ("Direct" & "Radio") can't be read a lot of times
The 2 US crashsites i found did not have a single piece of loot. Spawned next to one just when server came back online, so it seems like loot did not spawn at all.
(At lest some) vehicles are rubberbanding so hard, it's kinda faster to walk around
(Some) Zombies are glitching through doors even though you locked them inside
(Some) Zombies are way slower than their running animation indicates
And these were just the first things that i remembered, i probably forgot a bunch of things i noticed during 4-5 hours of 0.62 experimental :P
Hiding your tents and barrels will be a way harder task now... makes me kinda sad since i really like the new forests. I just did not see a single spot where i thought "yea that's a great place to hide a barrel" so far...