GetTalentInfo returns nil when zoning into time-walking dungeons, arena, battleground

[Eungavi]

Hey!

So, one of my addon has a frame that listens to ACTIVE_TALENT_GROUP_CHANGED event which calls GetTalentInfo to check whether the specific talent is selected or not when its fired.

I honestly dunno why, but GetTalentInfo seems to be returning a nil value when the player zones into time-walking dungeons, arena and battleground.

Here's a code snippet:

local f = CreateFrame("Frame")
f:RegisterEvent("ACTIVE_TALENT_GROUP_CHANGED")
f:SetScript("OnEvent", function(self, event, ...)
    self[event](self, ...)
)
 
function f:ACTIVE_TALENT_GROUP_CHANGED()
    local _, _, _, selected = GetTalentInfo(7, 1, 1)
 
    if selected then
        objectA:Show()
    else
        objectA:Hide()
    end
 
    _, _, _, selected = GetTalentInfo(1, 1, 1)
 
    if selected then
        objectB:Show()
        objectB:RegisterEvent("PLAYER_TARGET_CHANGED")
    else
        objectB:Hide()
        objectB:UnregisterEvent("PLAYER_TARGET_CHANGED")
    end
end

Both, objectA and objectB are hidden when I enter those zones and I'll have to reload ui to see them again
(This function is the only part where it manages those objects' visibility)

What would be causing this and would there be any possible solutions?