Mathf.Floor produces inconsistent results when processing Physics.Raycast.Point X coordinate

How to reproduce:
1. Open the “MathTest“ project
2. Open the “SampleScene”
3. Enter Play Mode
4. Hover over the top-right of the “Plane” GameObject in the game view then press the space key
5. Observe the Console

Expected result: The x coordinate should stay the same since it is a plane
Actual result: The x value changes when the Mathf.Floor function is applied

Reproduced with: 2021.3.37f1, 2022.3.25f1, 2023.2.19f1, 6000.0.0b15

Reproduced on: Windows 10 (by reporter), Windows 11
Not reproduced on: No other environment tested

Note: Reproducible in the Player