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@steemium people are not fool... they are also checking Steembottracker .. you are sending bid in end even the bot is already full. That's why your bid going in loss.

It can happen, though rarely, There is a delay where two bids can collide, if you check the timing, those must be less than 1 min appart.
On the plus side It's for sure not happening between customers of steemium.