Hello,
Yes, issue was caused by your custom https://prnt.sc/26etv6i
I replaced
td, th {
border: 1px solid #dddddd;
text-align: left;
padding: 8px;
}
with
table:not(.variations) td, table:not(.variations) th {
border: 1px solid #dddddd;
text-align: left;
padding: 8px;
}
Check now.
Regards