Fertile Mind Cobalt Jewel

So I am slightly confused about the way the jewel appears to be working. I have an empty jewel slot and my character has 55 Int. My Fertile Mind jewel has +16 Int and then the Int from active Dex nodes within the jewel's radius. I have 2 active Dex nodes that fall within the radius, (and both show +10 Int each instead of +10 Dex when the jewel is placed.) From my understanding, that should reduce my Dex by -20 and grant me +36 Int, (+16 from the jewel + 10 and 10 for each of the nodes.) Instead, it is reducing my Dex by -20 but my Int is only going up by +5 to 60 Int instead of +36, to 91 Int. Am I missing something about how this jewel works? Nothing else is being changed at all, and if I place a normal +16 jewel in there, it grants me +16 Int. So I am confused if this is a bug or something intentional that I have overlooked?

Is the loss of dex unequipping one or more of your items?

Ah yes, it is. I thought I had checked that, but it seems somehow I had missed it strangely. Thanks!