Halfling Luck Bug in the Roll20 5th Edition OGL Sheet

The 5th Edition Player's Handbook, Chapter 7, Advantage and Disadvantage (p. 173) says: When you have advantage or disadvantage and something in the game, such as the halfling’s Lucky trait, lets you reroll the d20, you can reroll only one of the dice. You choose which one. For example, if a halfling has advantage on an ability check and rolls a 1 and a 13, the halfling could use the Lucky trait to reroll the 1. When using the Halfling Luck checkbox in the The Roll20 5th Edition OGL Sheet, as described here , it will reroll all ones, as seen in the screenshots below:

I was waiting to see if a dev was going to respond this. I would agree that this is a bug, but unfortunately I think you will just have realize this as a limitation of the character sheet and roll20 itself. As far as I know, it is impossible to use the results of one roll within another without the help of the API. I believe that critical hits are an exception, but I don't know about critical failures. I believe you will just have to be aware of this situation, and manually check the rolls in the future. That being said, the likelihood of this happening is extremely small so if you wanted to just ignore this rule I don't think it will have that much of an impact.

I agree with Kyle that this bug is unlikely to be fixed due to technical limitations. It also impacts only 1 in 400 rolls, and only those that actually use advantage or disadvantage. Perhaps this limitation of the Halfling Luck feature should be mentioned in the  Roll20 5th Edition OGL Sheet documentation ?