Setting the Project to use the new Experimental .NET 4.6 support apparently results in the Editor using the OS's Locale for formatting. In case of a non-English Locale this results in a mixed English/non-English Editor experience, specifically noticeable when commas are used for decimal separation.

Steps to reproduce:
1. [Change Locale setting to non-English]
a) Open Start menu and type Region
b) In an opened window select Formats tab
c) Select any non-English format, that uses commas instead of dots for decimal separation (for example, German (Germany))
d) Apply, close the window
2. Open attached project "Locale bug.zip"
3. Open scene "test" and select "RandomObject" from Hierarchy
4. Take a look at Component "Number Test"

Expected behavior: for float number "Random float" dots are used for decimal separation.
Actual behavior: for float number "Random float" commas are used for decimal separation.

Reproduced with: 2017.2.0b2, 2017.1.0f3.
Not reproduced with: 5.6 (no Experimental .NET 4.6 feature).