This bug doesnt repeat more often than not (3 times out of the 10+ of recreation attempts) and its difficult to pinpoint what happens but maybe who understands the sequence of events may decide to put some sort of guard against it happening.
Basicly i was experimenting with load bearing and the difference between glued from one side and glued from 2 sides to work out how much it increases.
The first attempt i died instantly on the collapse and when i respawned i had no backpack radar marker or map marker and when i went back to the exact spot it was not there.
I tried repeating exactly the same thing but the backpack spawned as it should and gave up and exited the game and viewed the capture to see if i could get any clues.
Couldnt really find any pattern and restarted the same game save and tried to recreate what had happened and once again first attempt i respawned without a backpack markers or a backpack being there.
I quit out again and viewed the footage and after that i restarted the save again but backpack marker behaved as it should on respawn every time so i quit and restarted and once again first attempt i respawned with no marker or backpack.
I not sure if its got to happen in your first death from a brand new session, i did think the destruction of frames and/or spawning of rubble was destroying or preventing the backpack from spawning but a couple of times that the markers worked when i went back i did find the backpack inside the block of rubble and underneath where it wasnt viewable until you smashed the block.
But looking at the video from the 2nd time it happened it seems the backpack is spawned and destroyed at the time a frame destructs if that makes sense.
https://www.dropbox.com/s/b1x3y1lc74sg422/Backpack_SD.mp4?dl=0
Basicly i was experimenting with load bearing and the difference between glued from one side and glued from 2 sides to work out how much it increases.
The first attempt i died instantly on the collapse and when i respawned i had no backpack radar marker or map marker and when i went back to the exact spot it was not there.
I tried repeating exactly the same thing but the backpack spawned as it should and gave up and exited the game and viewed the capture to see if i could get any clues.
Couldnt really find any pattern and restarted the same game save and tried to recreate what had happened and once again first attempt i respawned without a backpack markers or a backpack being there.
I quit out again and viewed the footage and after that i restarted the save again but backpack marker behaved as it should on respawn every time so i quit and restarted and once again first attempt i respawned with no marker or backpack.
I not sure if its got to happen in your first death from a brand new session, i did think the destruction of frames and/or spawning of rubble was destroying or preventing the backpack from spawning but a couple of times that the markers worked when i went back i did find the backpack inside the block of rubble and underneath where it wasnt viewable until you smashed the block.
But looking at the video from the 2nd time it happened it seems the backpack is spawned and destroyed at the time a frame destructs if that makes sense.
https://www.dropbox.com/s/b1x3y1lc74sg422/Backpack_SD.mp4?dl=0