Assuming this is an issue specifically pertaining to double-blocks/blocks larger than 1x1, but if they have a right click spell defined in 'spell_blocks' they cannot be broken in creative or survival, video to demonstrate here.

Update: This actually isn't just double-blocks and seems to happen with any spell blocks when using the latest Paper, Minecraft and Magic snapshot. It doesn't occur unless the spell block has "requires_wand: false"