Reproduction steps:
1) After extracting "2Editors.zip" make a copy of extracted folder
2) Launch 2, same version editors
3) Open "2Editors" project and it's copy with separate editors
4) On both editors open "Scene" scene
5) Press "Play" button on both editors
6) Make one editor Host, by clicking "LAN Host(H)" button and another connect to Host by pressing "LAN Client(C)"
7) On Host editor press Space button

Expected result:
Client's scene expected to be identical as host's

Actual result:
Client's scene objects are spawned in another object's position, randomly

Note:
Does not reproduce on build.