Using the "F" hotkey twice (2x"F" = "FF") in the Scene window sets the scene camera in follow mode of the selected object. This is extremely usefull for animation.
This does not work anymore.

repro:
- Play a scene, select any animated object that moves, hit "FF" on the keyboard...
or
- open attached project
- open cube scene
- Editor>Play
- select cube GO
- hit "FF" on the keyboard...
bug: GO is only framed once, then move away from the camera
expected: GO is framed and followed by the scene camera

this is a regression...
Repro in…
Version 2018.3.0a10 (dfb7f9251d9f)
Branch: trunk

NOT repro in…
Version 2018.3.0a9 (c1466ad7f325)
Branch: trunk