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Jumbled Text

I am dynamically writing to a text field ( t32.txt)  via a serial1 on arduino mega . The first text call goes in fine but subsequent writes jumble the old with the new. 

This is a new problem since I made some recent small changes to my displays and up loaded


I put in a new text field and altered arduino program. same result.

I  then looked at the data stream from the arduino with telnet and normal serial print and it is sending correctly

Any solution for this

Nextion editor 3.6

Model NX4024T032_011

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Another thing I have just noticed that is if I  write

A

and then

BCDEFG

the text shown is 

BCDAEFG

The A always stays in the middle of the new text

I am using xcen = CENTER and ycen=DOWN with the text i'm using

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