PS4 pro, single player only, patch 1.36 applied.
I fought with a Harvester who was over the hill. I attacked him and hid behind the hill several times, he answered with artillery to my last position each time. And I almost finished him and his entire escort (Hunters). However, the last Hunter just ran past me (I hid in the barn), threw out the ticks and disappeared. I destroyed the ticks, left the barn, and could no longer find the Hunter. I used flares and fireworks, but it was quiet. Then I ran over the hill and didn’t find the Harvester either. He couldn’t have gone so far. It was a creepy and mystical moment. 
The only thing is a pity for the resources spent on the Harvester.
Also, I provoked a FNIX Tank to chase me through mine traps on the forest road. He ran, stepped on a couple of mines and disappeared. I did not see the moment itself, because hid in the house. But when I got out, I only heard the technical sound of the machine’s engine running, but I couldn’t find it. He stuck somewhere in a parallel world.
Do you remember where exactly that happened?
Yes, it is here (far end of South Coast Region). Additionally, while I was taking the screenshot, I found that Harvester there, and he was damaged, as I left him there before dissapearing.
I just want to say i have seen a similar issue today for the first time, but different… Assets are taking ages to load in… i reached a destroyed fishing village town today and could see a few buildings then all of a sudden the town just appeared like buildings cars and fire etc just appeared out of thin air… I’ve never seen this happen till today…
I want to say i just updated to the latest AMD 23.5.2 drivers a few days ago and haven’t played till today. So it maybe an issue with my drivers i’ll try to go back to old ones and see if it fixes…
November 2024. PC, Steam
I’ve noticed several times that some machines disappear under different circumstances. It seems to be harvester escorts. Sometimes they disappear immediately after I destroy the harvester. Sometimes, they disappear immediately after I kill the escort. I does happen (occasionally) if I run away from a losing battle, and the escort chases me. If I then kill the escort, it can disappear. Maybe it has something to do with the distance of the escort from the harvester?