WowAce

After the latest beta build, name plates are showing like this even though they are NPCs with 100% hp:

Just to add, when clicking players there is a delay where it shows their name as "unknown" for a while before showing their real name and also their level is displaying as "??" 

Message: ...rface\AddOns\ShadowedUnitFrames\modules\altpower.lua:21: attempt to call global 'UnitAlternatePowerInfo' (a nil value)
Time: Thu Aug 27 08:41:21 2020
Count: 2
Stack: ...rface\AddOns\ShadowedUnitFrames\modules\altpower.lua:21: attempt to call global 'UnitAlternatePowerInfo' (a nil value)
[string "@Interface\AddOns\ShadowedUnitFrames\modules\altpower.lua"]:21: in function `?'
[string "@Interface\AddOns\ShadowedUnitFrames\modules\units.lua"]:38: in function `FullUpdate'
[string "@Interface\AddOns\ShadowedUnitFrames\modules\units.lua"]:377: in function `CheckUnitStatus'
[string "@Interface\AddOns\ShadowedUnitFrames\modules\units.lua"]:613: in function <...nterface\AddOns\ShadowedUnitFrames\modules\units.lua:442>
[string "=[C]"]: in function `SetAttribute'
[string "@Interface\AddOns\ShadowedUnitFrames\modules\units.lua"]:963: in function `LoadUnit'
[string "@Interface\AddOns\ShadowedUnitFrames\modules\units.lua"]:1336: in function `InitializeFrame'
[string "@Interface\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua"]:263: in function `LoadUnits'
[string "@Interface\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua"]:86: in function `OnInitialize'
[string "@Interface\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua"]:907: in function <...ace\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua:905>

Locals: self = <table> {
UpdateVisibility = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\altpower.lua:20
OnEnable = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\altpower.lua:5
OnDisable = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\altpower.lua:15
moduleKey = "altPowerBar"
defaultVisibility = false
moduleName = "Alt. Power bar"
Update = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\altpower.lua:46
moduleHasBar = true
}
frame = SUFUnitpet {
highFrame = <unnamed> {
}
OnEnter = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:669
UnregisterAll = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:147
OnBackdropLoaded = <function> defined @Interface\SharedXML\Backdrop.lua:205
GetBackdropColor = <function> defined @Interface\SharedXML\Backdrop.lua:443
powerBar = <unnamed> {
}
unitRealOwner = "player"
ClearBackdrop = <function> defined @Interface\SharedXML\Backdrop.lua:335
unitType = "pet"
indicators = <unnamed> {
}
unitInitialized = true
unit = "pet"
ReregisterUnitEvents = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:43
SetupTextureCoordinates = <function> defined @Interface\SharedXML\Backdrop.lua:267
HasBackdropInfo = <function> defined @Interface\SharedXML\Backdrop.lua:331
RegisterUnitEvent = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:114
fontStrings = <table> {
}
GetEdgeSize = <function> defined @Interface\SharedXML\Backdrop.lua:241
TopEdge = <unnamed> {
}
unitOwner = "pet"
fullUpdates = <table> {
}
UnregisterUpdateFunc = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:137
combatText = <unnamed> {
}
incHeal = <unnamed> {
}
FullUpdate = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:35
LeftEdge = <unnamed> {
}
registeredEvents = <table> {
}
UnitClassToken = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:684
SetBackdropBorderColor = <function> defined @Interface\SharedXML\Backdrop.lua:475
RegisterNormalEvent = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:64
SetVisibility = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:248
healthBar = <unnamed> {
}
ApplyBackdrop = <function> defined @Interface\SharedXML\Backdrop.lua:347
SetBackdrop = <function> defined @Interface\SharedXML\Backdrop.lua:382
GetBackdropBorderColor = <function> defined @Interface\SharedXML\Backdrop.lua:462
altPowerBar = <unnamed> {
}
SetRangeAlpha = <function> defined @Interface\AddOns\ShadowedUnitFra