Different Store Parsing <br> Differently

Shopify Partner
8 1 0

Built a tiled variant feature for a client. Added <br> tags in the variant names, like the image below. Worked fine on the first store. 


<br> in Shopify Admin<br> in Shopify Admin

Took the same theme, uploaded it to a different store and the line breaks are just printed out now in the string. Created a new development store to test and the

<br> tags works perfect like the first store.

Contacted Shopify support twice now and they keep telling the client that the developer needs to fix this issue..


Below is how it looks on the store that is functioning properly. The broken version is "250mg<br>Everyday".



Am I missing something here?? or is this a Shopify store issue?