[Paraview] tiled display with gaps?

[Jean M. Favre]

I am having a problem running paraview-3.6 and paraview-CVS on a tiled
display. There are large gaps (several 100s) of pixels between each
tile, no matter what the -tmx and -tmy options are set to.

ParaView 3.4 and EqualizerGraphics 0.9 work perfectly well on the same
cluster and tiled display setup, with no gaps between rows and columns.

Has some setting gotten lost in version 3.6 and above?

Jean