Few moments ago, while copying and pasting inside c::b, I suddenly noticed that the font size shrinking. After some repeating operation, I finally found out that it was due to the Ctrl + CapsLock - pressd once, shrinked a little, and couldn't be changed back from the options dialog. I also know that in the scite, Ctrl + mouse whell can change the font size and c::b seems to use the same editing component as scite. I dont know whether it can be called a bug but I think it's my duty to post here.
Regards.