This is the correct behaviour.
In that case, tooltip for Reckless Attack needs to be replaced with "you roll again and must use the new roll" ...
Bcs this is not how Advantage is supposed to work.
Missing is not the point here. ( xD )
Rolling and loging is ...
First of all, Advantage has always been a reroll where you take the best value, you just tend to roll two dice at the same time. As it was said, in the game, you're not being forced to use the new roll. Your best roll had already missed, the second one also missed, so your attack remained a miss. You don't magically get two new rolls.
For Reckless Attack to be used as a reaction in the first place means the first roll had missed, even though it isn't used as a reaction in pen and paper. I don't see the need for the log to have to change, because it's also working as intended.
If you want to start rolling with Advantage from the beginning of the turn, I suggest using Reckless Attack beforehand and see how the log handles it.
