Opera and dotted border

Once on one site, I noticed some clumsiness when displaying Opera, a seemingly primitive div. And yesterday, finally, I found the time and desire to get to the bottom of the truth. So:

  <div style = "
     color: # 696969;
     background-color: # F5F5F5;
     padding: 10px;
     width: 770px;
     border-top: dotted # A9A9A9 1px;
     border-bottom: dotted # A9A9A9 1px;
     border-left: # 669999 solid 5px; ">
 If the upper and lower boarders are point - the left one disappears :-)
 </ div> 

But:
')

  <div style = "
     color: # 696969;
     background-color: # F5F5F5;
     padding: 10px;
     width: 770px;
     border-top: # A9A9A9 solid 1px;
     border-bottom: # A9A9A9 solid 1px;
     border-left: # 669999 solid 5px; ">
 And when the line - everything is ok.  Topical for <i> dashed </ i> and <i> dotted </ i>.
 </ div> 

The bug has been going on for quite some time, and at the last 9.64: 1048 it has not yet been fixed.