I googled the issue and everywhere I looked told me it wasn't possible but I watched golems spawn on the sea lanterns so I added bottom half slabs on top and I'm watching golems spawn on those too. Will add a video if I can catch it happening.
Edit: yeah my b, searched half slabs and it didn't come up 😂 here's the video anyway
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We're tracking this issue in MCPE-56833, so this ticket is being resolved and linked as a duplicate.
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