We've confirmed there are no related technical issues for sub counts. It's likely folks subscribing and unsubscribing naturally. Explained in detail here: https://goo.gl/6B1Eb6 . Hope this helps clarify.
@TeamYouTube Hi there. Something has been off with the subscriber count this entire week. Just a second ago, I lost 40 (which is highly unusual for me). Earlier this week, I experienced something similar. This spastic fluctuation seems worth looking into
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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