The main problem is in when I'm adding a pic to any post with standard visual editor the img code looks like:
<img class="alignleft" alt="img_alt" src="http://mysite.com/path/to/picture/img.jpg" width="xxx" height="yyy" />
and as a result I see "no picture" instead of inserted pic in the post preview.
Everything is OK when I'm using the text editor but every time when I switch back to visual editor the code breaks again.
Could anyone help me to solve this issue?
P.S. All standard recommendations: deactivating plugins, switching to default theme, resetting plugins, re-uploading files, etc... was done with no luck.