Abyssal depth is not opening, only Abyssal Trove as Abyss reward

I use abyss scarabs of multitudes, +2 to Abyss, and full points in the atlas tree related to abyss.

I ran more than 30 maps, opening around 150 abysses, but none ends with abyssal depth, only abyssal trove. The math is around 0.001% probality of this, dont understand how it can happening.

Strange enough, after this post I removed the Influencing scarab of Conversion and I found an Abyssal Depth

With more data, the ratio returned to normal, I find an abyssal depth on around 1:10, I suspect the scarab or the gods intervened

Further reserch on the subject, if I put any scarab as a third (2 abyss scarab of multitudes already there) in the map device, the abysses are not opening.