Stairs are gone in Minecraft (Creative Mode)?

I'm in creative mode as I've been before- but suddenly I don't have stairs? I did an update and now I have no stairs or slabs. I have new things like new walls I can build but yeah, no stairs is a pain in the but. Anyone else have this or know how to fix it?

Added (1). I also can't build fence gates, but I can still make fences -.

Well the best thing to do is DELETE the minecraft folder the restart minecraft

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