System Environment:
Windows 7 SP1
Azul zulu JDK 8u362, Forge 14.23.5.2860, Optifine G6 pre1

Bug description:
When I both installed Mantle and Valkyrie with MC-67532 fix enabled, some thing went wrong while displaying the armor higher than 20,
After disabled the MC-67532 fix, it works fine.

Screenshots:
MC-67532 fix enabled:

MC-67532 fix disabled:

Is this the latest Valkyrie dev build?

Oh, so sorry for the late reply due to a power cut:(, I am using the latest Valkyrie build.