This also occurs on official servers placed items and newly dropped items such as ore after mined and logs wont appear until you relog. Seems like it gets worse as more ylands are explored, before the protection barrier update i explored the starter yland with no problem, The 2nd yland items started not appearing once i had explored about half of it and the 3rd yland a relog was needed to place/pickup items and for items picked up i had to relog to see...

Hello i have now played on 3 official explore PA servers and after a while they disappear from the server list and i can no longer join them even from the continue menu. the last one i was having a inventory bug where some items were not able to drop or be removed from my inventory after them duplicating when placing them into a stone chest i could not use the duplicated ones but after a relog some were fixed but a few remained so i went to...

thankyou can see the server again

Did you try verifying the game files through steam?

great news thanks for the quick reply