I have been using Bulletproof Buttons to ensure my round buttons and <td> cells look round in Outlook. I tested the following code on different Outlook editions and haven't had any issues with rendering, but some of my email recipients are having problems. In the emails they've forwarded to me, I can see they're using Outlook, and I can see that the code I wrote has changed. Does anyone know a solution for this or why it may be happening?

This is my original code:
<!--[if mso]> <td align="center" valign="top" width="30%"> <v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" xmlns:w="urn:schemas-microsoft-com:office:word" style="border-radius: 4px; -moz-border-radius: 4px; -webkit-border-radius: 4px;height:120px;v-text-anchor:middle;width:170px" fillcolor="#5b6770" stroke="f"> <w:anchorlock/> <center style="text-align: center; line-height: 1;font-family:arial,helvetica,sans-serif;font-size: 15px;color:#ffffff">Text text text text text</center> <center style="text-align: center; line-height: 1;font-family:arial,helvetica,sans-serif;font-size: 12px;color:#5b6770"> </center> <center style="font-size:24px;color:#ffffff;text-align: center; line-height: 1.15;font-family:arial,helvetica,sans-serif;font-weight:bold">Text text text text</center> <center style="text-align: center; line-height: 1;font-family:arial,helvetica,sans-serif;font-size: 14px;color:#5b6770"> </center> /v:roundrect </td> <td width="5%"><![endif]-->

This is the code in the email forwarded back to me:
<td style="width:30.0%;padding:.75pt .75pt .75pt .75pt" valign="top" width="30%">
<p align="center" class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:center;line-height:115%;vertical-align:middle">
<span style="font-size:12.0pt;line-height:115%;font-family:&quot;Arial&quot;,sans-serif;color:#6A737B"><img alt="Rectangle: Rounded Corners: Text text text text text

Text text text text

" border="0" height="83" id="_x0000_i1029" src="cid:image002.png@01D4889A.FC5643C0" style="width:1.2222in;height:.868in" width="117"></span><o:p>/o:p</p></td>