Reproduction steps:
1) Open user's attached project
2) Open "Scene" scene
3) Select "GameObject" and turn off "Autorun" in inspector (Delorean (Script))
4) Enter playmode
5) Turn back on "Autorun" in "GameObject" Inspector
6) Press "Start" GUI button and wait few seconds
7) Click twice (to quickly turn off and back on) on "Pause" button
8) Notice a warning message in Unity console; it tells how long the previous frame took
9) Click few times on "Next frame" and unpause game

Actual result:
While game's paused making few steps doesn't update Time.unscaledDeltaTime and on play it reports time since paused game.

Expected result:
While game's paused making few steps should update Time.unscaledDeltaTime to show time since last active frame.