Describe the bug
At the raid grid oUF setup the name is shaking, but only on group 5

How to reproduce
be in a raid

What did you expect?
No Shaking like in the other groups

Video
https://github.com/oUF-wow/oUF/assets/23194902/7d64bce3-95f3-4e68-87fe-719dd6c88229

This is not really a bug with oUF, just quirks with the UI rendering engine in WoW, closing it as such. You'll just have to play around with your anchors and offsets 🤷.

This is how I create the Name Text Font String:

 local function CreateRaisedText(raised)
    local text = raised:CreateFontString(nil, "OVERLAY")
    text:SetFont(UNIT_NAME_FONT, 11)
    text:SetShadowOffset(-1, -1)
    text:SetShadowColor(0, 0, 0, 1)

    return text
 end

   local name = GW.CreateRaisedText(frame.RaisedElementParent)

    name:SetShadowOffset(-1, -1)
    name:SetShadowColor(0, 0, 0, 1)
    name:SetJustifyH("LEFT")
    name:SetFont(UNIT_NAME_FONT, 12)

    frame.Name = name

local name = frame.Name

name:ClearAllPoints()
name:SetPoint("TOPLEFT", frame.Health, "TOPLEFT", 2, -2)

frame:Tag(name, "[GW2_Grid:name]")

GW2_Grid:name is just "return UnitName(r or u)

You seem to have a sword icon to the left, I'm going to assume that's a tag as well, as you anchor your name object to the Health element. Please show the full code for this, as well as show how self.RaisedElementParent is created.

Have tested it also without the sword icon and only the name with the GW2_Grid:name tag.
I tought also that the sword can cause this but it has the same behavior without it.

Here is the code from the RaisedElementParent and the Tag:

local function CreateRaisedElement(frame)
	local raised = CreateFrame("Frame", nil, frame)
	local level = frame:GetFrameLevel() + 100
	raised:SetFrameLevel(level)
	raised.__owner = frame
	raised.TextureParent = CreateFrame("Frame", nil, raised)

	return raised
end

AddTag("GW2_Grid:name", "UNIT_NAME_UPDATE", function(unit, realunit)
        return UnitName(realunit or unit)
    end)
    
local function AddTag(tagName, events, func)
    GW.oUF.Tags.Events[tagName] = events
    GW.oUF.Tags.Methods[tagName] = func
end

The jiggle only happens with a frame size of 120x60 and only in group 5.
with 121x60 is shifts to group 3

Ok, happens also if the name string is attached to the frame itself

I will try to anchor the name to the frame itself and see if this is fixing this. :)