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I wish there was someone to ask questions like these. I notice certain peculiarities at times, and I simply don't understand the system behind this engine. In my logic, the number of upvotes shouldn't drop for any reason. Wishing you peace.

That's right, it is assumed that if you do not have negative votes we should not decrease, but if you start to analyze the situation of this happening it is now more often and no one complains.
Also my great friend