OS: OS X 10.9.5
Browser: Chrome 39.0.2171.95 (64-bit)
On the first line (wherever the cursor starts), I am able to type code and the space bar works. After hitting return and starting a new line, the space bar stops working on the new line. Returning to the previous line, the space bar works.
After that, with each new line, the space bar will sometimes work and sometimes not work. I tried entering in a number of lines and couldn’t establish a static pattern. I.e.: sometimes I would go three lines without a problem. Then the next two lines would not allow me to add spaces. In each case, the space bar either works on a line of it does not. By that I mean that it will not work anywhere where on line 3 and will work across line 4.
Let me know if you’d like a screen shot.