Ever accidentally made a change or clicked on something on someone else’s report while you were just taking a look? Introducing view/edit mode to make sure that all moves and edits you make are purely intentional and not accidental.
Some time metrics were being problematic so we just booted up the ol’ time machine and squashed some bugs like how selecting time spent metric and hitting apply resulted in an exception or choosing previous time period threw null pointer exceptions. It was about time anyway.