Did you realize that the bug was an issue that could badly affect the exchange but never reported the issue to the exchange? If, yes then I believe that should not have been done to any good business trying to serve the public. You don't benefit selfishly from even the bad ones. You could send your gains to trustworthy authorities who are qualified to handle exchanges and moral issues like that.
In regards to the refunded token, if the crash happened naturally and not deliberately crashed & that results to real losses then I think the buyers should have been compensated for trying to support and possibly raise the price of the token. And if that was not a real crash, maybe was due to mere figures changing while the demand remains thesame or changed a little then it's OK they fix the issue and return the funds to buyers who took advantage of the crash
the problem is that I have already informed the exchange concerning the bugs, it is in spite of that, there are always new ones ..
the price dropped because their API crashed and got stuck on the wrong price.
the bug lasted more than 24 hours .. wonder how a platform does not have immediate alerts in the event of a bug on a peer ..
in short, I will move away from this platform, it will be better ..
Thank you