After the deal is over and hands are exposed for scoring, the tiles in the winner's hand are by default grouped to reflect how the scoring is applied. E.g., Chows are grouped correctly and most irregular hands (e.g. those involving "knitted" sets) are arranged in a way that matches the definition of the hand. You can turn off the feature, if you prefer to display the hands unaltered.
Note: Disregarding the value of this setting the tiles in the winner's hand are always arranged and grouped, when displayed in the Scores dialog box.
Arranging tiles manually
Displaying hands after deal is over
Showing Wall automatically at the start of the deal
Displaying Wall and Dead Wall after deal is over
Setting the time for auto move
Setting the discard delay
Using auto acceleration
Showing the source of discard
Enabling or disabling overrides for displaying discards
Enabling or disabling the Undo feature
Enabling or disabling replay of hand
Enabling or disabling hints
Getting hint for robbing a Kong
Choosing random number generator