While testing multicellular, I created a ‘stick’ organism about 10-15 cells long. Gameplay with it was normal, but when re-entering the editor, my organism had just disappeared, along with its name, world statistics, auto-evo data, etc (keep in mind I was ~1 billion years into the run). However, the patch map infoviews were still functional.
Well technically we don’t know what the issue is without logs. But it is very likely that either this is the Godot Engine bug that @GameDungeon mentioned where a scene starts to randomly fail until the game is fully restarted (Editor screen fails to load anything randomly · Issue #5075 · Revolutionary-Games/Thrive · GitHub) or there is some rare yet to be seen our code failure in setting up the editor (but the former is much much more likely based on all the recent other bug reports where that engine scene load failure makes up like allof them).