Adding a class with “span” in the name matches CSS when it shouldn’t

I’ve noticed that when I add the class “span” or “spanish” or “anthing-that-has-span-in-it” to as a css in a table cell (TD) then the CSS for Customizr matches the cell and breaks the layout.

To try to be more clear …
<td class="data-type-french1"> does not match any CSS selectors in Customizr and <td class="data-type-spanish"> DOES match the CSS selectors in Customizr because the class has the text “span” in it. Any class that has “span” in it matches the following selectors in Customizr.

.row-fluid [class*=span]:first-child in tc_common.min.css?ver=4.4.10
.row-fluid table td[class*=span], .row-fluid table th[class*=span], table td[class*=span], table th[class*=span] { in tc_common.min.css?ver=4.4.10
(and some others)

Since it matches those CSS selectors when it shouldn’t it behaves unexpectedly and interferes with the normal layout. Mainly because of the display: table-cell; and float: none;

It seems like I should be able to use custom classes in my own CSS such as “my-css-class-spanish” without the CSS from Customizr messing with it… It happens both with Chrome version 92.0.4515.107 and with Firefox version 88.0.1 on OSX.

thanks!