Truly, gamblers to some point after being addicted through chasing of loses begins to see their addiction as a normal and regular activity which does not get them bothered because already they are used to it and it is already their way of lifestyle but I think that does not stop categorising them to be free of addiction but the only difference is that their perspective of chasing loses after games is either not that way they used to be or they just see it as a regular occurrence or incidence and are not bothered anymore about it.
And what causes gamblers chasing loses most times is when a gambler gambles more than they can always afford to lose, and in such case, the only option such gambler has is to double his betting stake, while hoping to win and recover all lost funds plus an extra, just as O.P did, by winning an extra, which is a rare occasion, as most times, if you are not lucky enough, you could also end up losing your entire funds, and gamble only responsibly at all times no matter whatever the scenario be, while having how much is he/she willing to risk at all times.