Heyo, so I'm having the same issue and I kind of figured out something. Firstly I want to point out that the issue, for me, only happens in character mode, not in the VTT. I noticed that when I roll most modifiers what happens is that the game rolls the d20 and then add 10 * modifier, which prompted me to check the macro, which is @{wtype}&{template:simple} {{rname=^{constitution-u}}} {{mod=@{constitution_mod}@{jack_bonus}}} {{r1=[[@{d20}+@{constitution_mod}@{jack_attr}[CON]]]}} @{rtype}+@{constitution_mod}@{jack_attr}[CON]]]}} @{charname_output}. Now what seems to be happening is that jack_attr is, for some reason, not set to 1 but to 10. Admittedly, I don't even know what jack_attr is, nor where to find it, since if I try and edit the hidden inputs stuch as attr_jack_attrs (which by default has no se tvalue) to 1, you'd think it would now solve it, yet nothing happens. Hopefully this can help understand what's happening.