Roll Query "Reroll once" doesn't behave correctly (For 5e behaviors)

Playing a Paladin with the Great Weapon Fighting.I use a Greatsword with 2d6 damage. The expected query with the skill would be 2d6ro<2. To reroll the 1-2 rolls for my attacks. Instead, I saw a reroll get rerolled again in a game. The results were as follows: Query : 2d6ro<2 + 3 + -1 2 (greyed out) 3 2 (greyed out) 3 I expected the reroll to be "(2 (greyed out) + 3 + 2) + 3 + -1 = 7"

I think it is because it is seeing each dice separately. This makes it see each 2 to be rerolled instead of only one of them. A macro expert will be able to explain it better and probably make a suggestion on how to rework the macro.

This looks like the display of sequencing isn't the way you expect. What I think happened above, is you had 2d6 to roll: the first die was rolled, got a 2, and the reroll was made, and that was a 3, the second die shown. Now that die is complete, roll20 moves on to displaying the second die's results: and that second die also rolled a 2, so a reroll was made. This is generally the way roll20 displays exploding and rerolled dice: each die is rolled in turn, and all of its rerolls or extra dice are rolled and displayed, before moving on to the next die in the original roll.