Why does changing the color of the logo work incorrectly on ios Svg?

Question

iOS

There is a site On windows, everything is ok as it should display the logo, but on a real iPhone with ios, the problem is with the logo, it is Always black (text, Path there) the color is set via css. Here is a normal display, the current went to the site and the Grad should be White, and ios is black and that's it .. Who will tell you? they say ios is not friendly with flexbox and svg if the block parent is made. Developers on ios will be able to quickly understand what's the matter, if they also know how to connect an iPhone to the browser in devtools ..
The problem is also in ios safari and chrome and opera, etc., hmm everywhere. Maybe there is an error in js hmm .. lambdatest . com service did not help - there is an ios emulator, and emulators in ios iPhones - also do not display this bug.