Here is how to post picture!!!!
If you are trying to post a picture, do not click the icon with a picture. It will ask for url but most people don't have it. Click the last button ( UPLOAD FILE ) and then search your picture.
Someone gotta fix this haha, it's really confusing and I always have this stuff come out:
![alt text](image url)
Now, if I upload by clicking the last icon, it's this: