Graphical printout time stamps are sometimes incorrect (1 time step too short)

This issue was created automatically from an original CUE issue. Further discussion may take place here.

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This was raised on the forum by Costas and I had recently also seen similar behaviour.
There appears to be an issue with the time stamp on graphical printouts in TELEMAC3D. The first time stamp is zero (as it should be) but the following printouts are one time step too low.
This does not seem to always happen. The case that I had where it happened did not have a boundary file (it used keyword defined prescribed elevation). Costas' case was more complex (he was doing 3 way coupling with t3d-gaia-tomawac. His forum post title was 'Time inconcistency in GRAPHICAL OUTPUT between TELEMAC3D and GAIA (SISYPHE)'.