Thanks for the links, Pipster. No... they don't sound like my case.
Also, in my case it's not just a "small difference" in prices, it's just like opening positions in the wrong direction and not "managing" them afterwards. And it doesn't happen during backtesting.
The first few times I thought it was my fault, but... I'm a software developer and I can tell if it's the user being wrong or the program. 🙃I'll investigate...
It's a worrying thing, so far I've almost always lost money due to this atypical behaviour. Almost always with EURUSD, but I have to say that lately all the bots are behaving strangely.
Sad...
EDIT: @Sophia, thanks for moving this post to the correct section of the forum. 👍