[Autumn]

Although not entirely significant, Leporidae have -16% sound resistance, not -15% it looks like.

[Neus]

That's very odd. As far as I can tell, it's a 15% weakness. Does any other 15% weakness display this way?

[Autumn]

as far as I can tell, it appears that the Phenex and Doriad '-15%' resistances act this way as well, being displayed as -16% on the character screen, there's no efficient way to test if it's a display error or not as decreasing elemental resistance to the point of being exactly 25% is difficult.

[Neus]

Do any other weaknesses display as exactly 1% off?

[Autumn]

Yeah the -25% resistance races and some others appear oddly as well.

after creating a character of each here's what I found

Phenex (-16% ice, dark)
Papilion (-31% earth)
Leporidae (-16% Sound)
Hyattr (-16% Wind)
Doriad (-16% fire, dark)

these are the races effected by this odd bug.

Elf, Umbral and Mechanation seem to have their resistances untouched, and work fine.

[Neus]

I have absolutely no idea why but BYOND was taking -15, and after putting it through the round proc, it came out as -16 despite not having any fractional values.

It's been corrected anyway.