The '+' signs disappear in my image tags after saving and closing the page
When I add an image tag (or whatever they are called) on my images with some text on it, the site does not always save those as it should. I especially experienced this problem when having the '+' sign in the text. After saving, closing and reopening my browser, the + sign is replaced by a space.
I'm using Firefox 24.0 on Ubuntu 12.04 with cinnamon.
Is there anything i can do to use the + sign in my images?
Thanks in advance.