Code Block with table not showing on Mailchimp - html-table

Question

I am building an email template on Mailchimp using code blocks in some parts. I have created a seemingly simple table which does show on the visual composer but does not show when I click on Preview or Test.
This is a standalone block, so I don't think I need to insert table anywhere but within a div element. After previewing the entire template and returning to the visual composer, the table disappears but does re-appear after clicking on the element below.
Is there any reason why this happens?
<div class="mcnTextContent" style="margin-left:64px; margin-right:64px">
<table style="font-size: 18px; font-family: Arial, Helvetica, sans-serif; font-color: #1F1F1F; width: 100%; margin-left: auto; margin-right: auto;" border="0">
<tbody>
<tr>
<td style="line-height: 0px !important; padding-bottom: 48px !important;" colspan="3"> </td>
</tr>
<tr>
<td width="33%"><span style="font-size: 10px !important; vertical-align: middle;">🟢 </span> <span style="font-weight: bold;">Year Launch</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">2020<br/>UCITs version - 2015</span></td>
<td colspan="2"><span style="font-size: 10px !important; vertical-align: middle;">🟢 </span> <span style="font-weight: bold;">Assets Under Management</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">USD $1B strategy<br/>UCITs version - SD $0.4B</span></td>
</tr>
<tr>
<td style="line-height: 0px !important; padding-bottom: 20px !important;" colspan="3"> </td>
</tr>
<tr>
<td width="33%"><span style="font-size: 10px !important; vertical-align: middle;">🟢 </span> <span style="font-weight: bold;">Performance 2020</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">5.49%<sup>2</sup></span></td>
<td width="33%"><span style="font-size: 10px !important; vertical-align: middle;">🟢 </span> <span style="font-weight: bold;">YTD Performance</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">0.50%<sup>1</sup></span></td>
<td width="33%"><span style="font-size: 10px !important; vertical-align: middle;">🟢 </span> <span style="font-weight: bold;">Yield-to-Worst</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">8.95%<sup>2</sup></span></td>
</tr>
<tr>
<td style="line-height: 0px !important; padding-bottom: 20px !important;" colspan="3"> </td>
</tr>
<tr>
<td width="33%"><span style="font-size: 10px !important; vertical-align: middle;">🟢 </span> <span style="font-weight: bold;">Duration</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">4 years<sup>1</sup></span></td>
<td width="33%"><span style="font-size: 10px !important; vertical-align: middle;">🟢 </span> <span style="font-weight: bold;">3-year Volatility</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">7.23%<sup>2</sup></span></td>
<td width="33%"><span style="font-size: 10px !important; vertical-align: middle;">🟢 </span> <span style="font-weight: bold;"># of Positions</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">144<sup>3</sup></span></td>
</tr>
<tr>
<td style="line-height: 0px !important; padding-bottom: 20px !important;" colspan="3"> </td>
</tr>
<tr>
<td width="33%"><span style="font-size: 10px !important; vertical-align: middle;">🟢 </span> <span style="font-weight: bold;">Gross Yield (USD)</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">442%<sup>2</sup></span></td>
<td width="33%"><span style="font-size: 10px !important; vertical-align: middle;">🟢 </span> <span style="font-weight: bold;">MTM Yield (USD)</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">45%<sup>2</sup></span></td>
<td> </td>
</tr>
<tr>
<td style="line-height: 0px !important; padding-bottom: 20px !important;" colspan="3"> </td>
</tr>
<tr>
<td style="font-size: 12px !important; line-height: 16px;" colspan="3"><sup>1</sup> Source: Morningstar Direct March, 5th, 2021 (HI USD shareclass).<br/> <sup>2</sup> Source: TwentyFour, Bloomberg; February 28th, 2021.<br/> <sup>3</sup> This is now credit issuers only so it excludes ABS and Government (total credit positions = 271). Source: TwentyFour Bloomberg Feb 28th 2021.</td>
</tr>
<tr>
<td style="line-height: 0px !important; padding-bottom: 20px !important;" colspan="3"> </td>
</tr>
<tr>
<td colspan="2"><span style="font-weight: bold; font-size: 24px;">Ratings & Awards</span></td>
<td width="33%"> </td>
</tr>
<tr>
<td style="line-height: 0px !important; padding-bottom: 20px !important;" colspan="3"> </td>
</tr>
<tr>
<td style="padding-right: 40px;" colspan="2"><span style="font-size:20px;">★★★★★</span><div style="line-height: 4px;"> </div>
<span style="font-weight: bold;">Morningstar</span>
<div style="line-height: 8px;"> </div>
<span style="font-size: 16px;">This fund has been awarded.</span></td>
<td style="background-image: url('https://i.ibb.co/Jkd3npD/Untitled-1-copy.jpg'); background-repeat: no-repeat; background-size: 189px 117px; width: 189px; height: 117px;" colspan="1"> </td>
</tr>
<tr>
<td style="line-height: 0px !important; padding-bottom: 48px !important;" colspan="3"> </td>
</tr>
</tbody>
</table>
</div>

Answer 1

In this case, the issue was with the emoji 🟢 I used. For some reason Mailchimp didn't allow the table to render correctly.