Bug reproducible only on icon view: Case A: 1) select one single file focusing it with the keyboard 2) press "SHIFT" key and keep it pressed 3) with the mouse click on another file OR, with the arrow keys, change the current file. -> All files between the first and the last will be selected. This is what an user expect and it is correct. Case B: 1) select one single file using the mouse (not using the keyboard like case A) 2) press "SHIFT" key and keep it pressed 3) with the mouse click on another file OR, with the arrow keys, change the current file. -> No file is selected and only the "focus" (dotted rectangle around the file name) is visible on the last file where whe have stop on third step. Case B should behave like case A: when a file is selected with the mouse it have to be possible to select multiple files using SHIFT+click.
Case C: 1) Select the first file using CTRL+click 2) press "SHIFT" key and keep it pressed 3) with the mouse click on another file OR, with the arrow keys, change the current file. -> All files between the first and the last will be selected. So the problem is only when the first file is selected with the "+" arrow or drawing a selection around the first.
*** This bug has been marked as a duplicate of bug 163451 ***