First of all, watch your language. We're here to help but you're making it very hard for us to do so because of the way you reported the "bug".
Second, if you had checked your lineup for the scrimmage, you'd see that it wasn't set at any moment. We keep a log of all changes made for all matches and there were no entries for this match from your team. The opposing teams lineup has been logged correctly, as expected.
Also, there's no possibility of setting the lineup and then have it deleted later on, because both changes would be logged. The only explanation I can think of is that you set the lineup of a wrong match, thinking it was this one.
While we check every bug report and try to help and fix the ones that do turn out to really be bugs, we reserve the right to ignore and delete the ones reported with abusive content and/or cursing. Also, fines and/or bans can also be applied. Therefore, watch out what you're going to write next.