After Safari 26.0 Update parts of a website appears black

Hello Everyone!

I upgraded to OS Tahoe and Safari 26.0 on my 2020 iMac and newer MacBook. Everything went smooth so far, but on one particular web page from a shopping website parts of it appear full black (which is normally white)

once I hover over that portion with the pointer. Unfortunately I have to work with this web page for our business on a daily basis.

On my MacBook I updated Safari to 26.1, which is not solving the problem.

Again, this problem appears only on that particular web page.

I wonder whether this is a Safari bug? Or the web page might be poorly written?

Hopefully this can be fixed somehow. I hate to install another browser only for the use of that website.

Does someone experiencing a similar issue after updating to Safari 26.0?