[sinnereso]

Originally Posted by Baertram Moved the thread as this is a question about a lua API function (even if referenced to an already released addon the forum "Released addons" is for "Addon-specific support threads created by their authors"). Edit: Did you check via d() messages if the playerID of the unit and the displayNames are the correct/expected ones? Maybe it always passes in the same id/account, or some nil value and thus returns true

just tested:

for iD = 1, GetGroupSize() do
		local playerID = GetGroupUnitTagByIndex(iD)
		local playerCharName = GetUnitName(playerID)
		local playerDisplayName = GetUnitDisplayName(playerID)
		local _, isRidingGroupMount, hasFreePassengerSlot = GetTargetMountedStateInfo(playerDisplayName)
                df(RidinDirty.logo .. " " .. tostring(playerDisplayName) .. " - " .. tostring(playerCharName) ..  " - " .. tostring(playerID) .. " - " .. tostring(isRidingGroupMount) .. " - " .. tostring(hasFreePassengerSlot))--TEST

and its outputting:

@NAME - charname - group1 - true - true
@NAME - charname - group2 - true - true
@NAME - charname - group3 - true - true

when were all standing near eachother unmounted. Everything is correct including @names and charnames except the true - true which should be false - false