Debug profiler says 'ticks' for 1 tick

The bug

The debug profiler says 'ticks' for one tick.

How to reproduce

1. Press F3 + L twice
2. Navigate to your minecraft folder -> debug -> profiling, and extract the contents of the .zip file
3. Open the deviations folder
4. Open any file
   Even though only one tick is shown, the text says '1 ticks'

Code analysis

Code analysis by [Mod] Avoma can be found in this comment.