Quite often I'm looking at the diff pane for a file in some old commit and something gets refreshed by SourceTree that causes the selection to jump to the first file in the commit.
It would be excellent if the currently displayed commit/file/hunk/line/scroll-position stayed unaffected during such refreshes.
I'm not sure exactly what ST is refreshing. Sometimes it looks like nothing was really refreshed (at least all the remotes and local branches look the same) but it still does this unwanted reset on the file list and diff pane.