UserAgent: Mozilla/5.0 (X11; CrOS x86_64 10176.76.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.190 Safari/537.36
Platform: Chrome OS 66.0.3359.48, Dev mode

Steps to reproduce the problem:
1. Open existing spreadsheet with formula for calculating the Month of a date in Chrome OS Dev mode in the format of MM/DD/YY
2. Calculation is wrong for MM, it calculates for example 02 month as 0 until you increase the Decimal point, it will then display as 0.2 instead of 2 representing second month.  
3. Changing to Chrome OS BETA will resolve it 

What is the expected behavior?
Instead of second month being displayed as 0.2 it should be displayed at 2

What went wrong?
Formatting issue on Chrome OS with Spreadsheets 

Did this work before? Yes Previous Chrome OS dev mode 

Chrome version: 64.0.3282.190  Channel: dev
OS Version: 10176.76.0
Flash Version: 

Issue only occurred when updating to the newest version of Chrome OS Dev mode.  Resolved through changing to Beta Channel