[SOLVED] Weird results with term.setCursorPos() when in a tab

local function drawElement(x,y,w,h,txColor,bgColor,text)
  local deText,i = tostring(text)
  term.setCursorPos(x,y)
  term.setBackgroundColor(bgColor)
  if w > #deText or h > 1 then	   -- We're 'drawing' something more than text
	for i = 1,h,1 do				 --
	  term.write(string.rep(" ",w))  -- Draw the 'element' (box/rectangle/line-seg)
	  term.setCursorPos(x,y+i)	   --
	end
  end
  if deText ~= "" and deText ~= "nil" then
	term.setTextColor(txColor)
	if w < #deText then w = #deText end -- Ensure minimum length
      local xW = (x + w/2) - #deText/2 -- Center the text horizontally
      local xH = y + h/2			   -- Center the text vertically
      term.setCursorPos(xW,xH)
      term.write(deText)
    end
  end
end

local function readInput(cX,cY,cO)  -- cursor X,Y and color
  local word = ""
  local curX, curY = cX, cY
  term.setTextColor(cO)
  term.setCursorBlink(true)
  term.setCursorPos(curX, curY)
  while true do
	local kEvent = { os.pullEvent() }
	if kEvent[1] == "key" then
	  if kEvent[2] == keys.backspace then
		if curX > cX then
		  curX = curX - 1
		  word = word:sub(1,#word-1)
		end
		drawElement(curX,curY,1,1,cO,black," ")
	  elseif kEvent[2] == keys.enter then
		term.setCursorBlink(false)
		return word
	  end
	elseif kEvent[1] == "char" then
	  drawElement(curX,curY,1,1,cO,black,kEvent[2])
	  word = word .. kEvent[2]
	  curX = curX + 1
	end
	term.setCursorPos(curX, curY)
  end
end