For our HTML we use classes and ID's, which is working fine since Gmail updated their CSS-library more then a year ago.
In the "new" Gmail (new 2018 design), everything is still fine, but as of this morning, all the HTML's break in the old-design Gmail because it doesn't add classes and ID's anymore?

This is how our TD renders in the new-design Gmail, which is fine:
<td id="m_6866585341487112325column" class="m_6866585341487112325font">

In the old Gmail, as of this morning, it only shows <td>

Seems like a weird bug on their end. I guess it has something to do with the change to the new layout, but I'm not sure (since it only happens on the old version and this month everyone will be on the new). Doesn't happen on the Gmail-app as well.

Didn't read about this bug yet, but I guess a lot of people will encounter problems if they use classes and ID's like we do. We just use a simple table-layout with classes and ID's which is normally working great.

<table border="0" cellpadding="0" cellspacing="0" class="wrapper">
<tr>
<td>
<table align="center" border="0" cellpadding="0" cellspacing="0" class="container">
<tr>
<td class="column">

Any ideas on why this is happening all of the sudden since this morning?