There is an issue with SoD. Having rockbiter active on main hand with Way of Earth rune (https://www.wowhead.com/classic/spell=408531/way-of-earth) causing totem timers to be almost instantly reset. That means shaman tanks cannot see their totem timers.

This is because SPELLS_CHANGED event is constantly fired when WoE is active (https://eu.forums.blizzard.com/en/wow/t/bug-sod-spellschanged-fires-constantly-when-rockbiter-and-way-of-earth-active/484740).

My workaround is a simple counter - we react to 4 first events to load all totems info and then we finish reactions. We will not properly process new spells learned, but well, this is just a workaround.
Hope you'll find a proper solution that I cannot find!