37e35147d8
There are two issues here. First, the instanced panel freeing uses the panel type after it's been freed a few lines up in this function. Second, while panel types are registered for a single space type, there are cases where they're used in multiple space/region types anyway. Because of that, removing the dangling pointer of the freed type from just the registered region & space type combination isn't enough, we need to process all regions. Pull Request: https://projects.blender.org/blender/blender/pulls/129676
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