thanks. i've actually never seen this before. does the status appear as orange semi-circles for anyone else? it looks intentional based on the source, but semi

thanks. i've actually never seen this before. does the status appear as orange semi-circles for anyone else? it looks intentional based on the source, but semi-circles are not in the legend at the bottom. wonder if it's based on how long it's been down, or the number of affected instances or something else...