Posted 8 September 2017, 1:53 pm EST
Running the Excel clone sample, I formatted a cell as a number with thousand separator using the comma symbol on the Cell type section of the Home toolbar. I then entered a number (9999999) directly into the cell and the number is formatted correctly at all times when entering the number. However, having entered the number in the cell, if you start to edit it and press delete or backspace the formatting of the number whilst editing the cell will not be correct and the text you see will be "9,99.00" or similar. When you finish editing the number, the formatting will then change to show the number correctly.
I am fairly sure this did not occur in previous versions.