This is where the end repeater does not un-power but if there is one repeater it is fine.
Video of an example:
https://youtu.be/E4uZgqlVgww
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Comments 4
Question, then why do the repeaters on 4 ticks up to the last one change state but not the last one?
would not explain a long line of repeaters
https://youtu.be/8q-YEov6alo
Looks like MC-54711.
A repeater also take some time to unpower. In this case, it takes longer to unpower, than it takes to repower.