My walls are invisible

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1

I'm trying to make a game but in the game editor I can't see most of the tiles but when I test the game the tiles are there.

2

What is the editor? Are you using Pulp?

3

We ran into this and couldn't figure it out until I read json files manually and realized there are LAYERS in Pulp Editor! Make sure that the little EYE icon next to World button is not crossed out.