Version: Minecraft 1.12.2, Forge 14.23.5.2775, Quark r1.5-133, Oddities (the only one that exists)

The Totem of Holding does not retain my armor, but still has everything else, including baubles. Tested with many different types (modded and vanilla) and combinations of armor, to the same end result.

I can't reproduce this. The totem should hold on to your armor and make you wear it.

This is a issue for me as well. Seems to be only an issue on servers.
Tested with only Quark 134 & Oddities on Forge 14.23.5.2768.
The log file shows a NoSuchMethodError.
latest.log