I have "auto centre" off and during last 2 months happens 3 times same issue:

I'm just waiting market open (after has being suspended) to place some bets, for example lay from 1.10 to 1.01 and when market open... ladder go to center (or many ticks up) and I place wrong lay bets (I mean, wrong prices).

This is a problem because I got "big" reds with this issue... and, so far, I could not find why.

Any suggestion about what may be causing this issue?