A bug in Adobe ColdFusion 2025 causes `getBaseTagData()` to fail when called from within a closure, even an immediately-invoked one that hasn't left scope. The function works correctly in the main control flow but throws an error inside closures, and `getBaseTagList()` also fails to include the parent tag in the hierarchy. This means any use of `.map()` or `.filter()` iterators inside custom tags that rely on `getBaseTagData()` will break unexpectedly. The same code works correctly in Lucee CFML 6.
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