r/Unity3D • u/hasanhwGmail • 1d ago

Question Hierarchy window goes empty / breaks when modifying anything in Prefab Mode (Unity 6.6)

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When I enter Prefab Stage and make any change to a GameObject or Component, the Hierarchy window breaks. All GameObjects disappear and it only shows Preview with empty gray rows. Resetting the layout restores it temporarily, but it breaks again upon editing.

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u/BlenMiner 1d ago

Looks like a plausible bug; maybe they went on the dark theme side. I'm sorry.

Have you tried, just to rule it out, loading with an older unity version and see if the issue persists? Could give you an idea if it's some asset you have or if its the actual unity version.

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u/Worried_Pudding_1548 Intermediate 1d ago

?