I had a problem with using the seek graph while playing on FICS.
I had made a "seek" command, and while waiting for a game I clicked on
the board to see a seek graph.
But the at same time someone accepted my previous seek creating a new
game. The result was:
1) The server's answer to a "sought" command was displayed in the console.
2) The board changed to an empty seek graph with the coordinate system
but no dots.
3) I could not return to viewing the board again. Clicking on the empty
seek graph had no effect. So I was unable to play the game. Only when
the game was aborted I could return to the chessboard again.