When colour codes or other formatting is used at the beginning of a line, the first space is eaten.

Steps to reproduce: 

Write three lines, each consisting of a space and then the letter X. 
Use colour codes for foreground and fg/background in the second and third, e.g.

" X^O"
"^C04 X^O"
"^C04,03 X^O"

They all should have an equal length. 
However, the two lines with colour codes only show the X and not the space in front of it. 

The same happens with the control code for bold. 

It's also only the first space and only at the beginning of a line. 
If you e.g. write a colour code, three spaces and a letter, only two spaces will be printed. 

This also happens for incoming text, not only the one you write.