My tribe is in the zone 864. After traveling to zone 903 for trades and crashing a couple of times (which happens to me every now and then, it's not a big deal atm). I headed back to zone 864.

Once there I couldn't see anything we've done in the last days. The totem, firecamps, baskets and even my tribe mates were invisible.
The ground where we gathered grass was full of grass again. The Trees we choped were back etc.

The only recent things I was able to see were the walls projects we have. They were made after I go on my trading trip, so it was the 1st time I saw them.

I tried to chop the 'regrown' trees but nothing happened. Fishing and drinking worked (we didn't transform anything in the river).

I think I was not able to see anything the was changed from the original 964 zone.
I guess it is due to multiple zoning since I had to cross like 3-4 zones to come home.

After login off and back, everything went back to normal.