Repro:
1) Create 3 empty gameobjects: A, B and C
2) Parent B and C under A
3) Place B far away from both A and C
4) Place C far away from both A and B
5) Disable B and C
6) Select A
7) Focus the scene window and press the F to frame
8) Notice the camera gets pulled way back so to frame A, B and C

Current behavior: The camera gets pulled way back so to frame A, B and C
Expected behavior: The camera gets pulled way back so to frame A, the only activated gameobject in the hierarchy

Note: It may also be desirable to have framing options at the top of the editor scene window.
Something like a toggle between framing the whole hierarchy vs only the selected gameobjects.