I was just looking at the code in that old thread, it seems that breaks ACF now, must have been some changes in the last year.
Before I comment in your other thread, I’ve been working on code to load default values into a repeater and I just want to make sure I’m doing the same thing you’re doing.
You are trying to load default values for a new post, not set values for all posts? the load field filter will change existing posts as well as populating values for a new post. I think what you are looking for is still the acf/load_value hook, but it needs to be populated differently.
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