As shown in the screenshot, while learning PCB design in AD recently, I discovered that besides DRC checks, AD also has a Health Check feature (the version used when writing this was 25.8.1). Several warnings appeared: Self-Intersecting Regions、Micro-Segments (Board)、Micro-Segments (Copper). This record mainly focuses on a strange issue encountered while fixing the first and third problems.
First, by clicking the issues listed:
You can locate the PCB area where the problem was detected. In my board, it pointed to this location:
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