I've placed a limit buy order. It appeared on my order list. Rate moved way below my buy level and stayed there for more than 3 minutes. My order remained untouched on order list. Rate moved back again and it was only then order appeared on the exchange order book.
I don't want to just describe what I'm observing because I know what will be support response. How do I document that behavior and present proof to your support? What is the maximum possible delay for an order that is accepted and listed on order tab to be placed on order book?
It can happen, and happend already quite alot to me, that an order i placed had delay of 10 to 60 seconds.
But this is not always the case, only very rarely, but then this issue lasting ~one hour or so (in that hour 50% of orders are delayed for few seconds).
I was able to prove this, because my limit price was quite high, so it was filled for sure (but with delay).
And in the order history I was able to prove it with "open" and "close" time plus the time of the trades belonging to the order.