Safari on macOS shows SVG image as broken/question mark (works in Firefox)

[MineGene]

Description

On macOS 26.4.1 (Safari 26.4, build 21624.1.16.11.4) the logo SVG at /kb/img/logo_dark.svg renders as a blue question-mark placeholder in Safari but displays correctly in Firefox.

Affected element:

<img src="/kb/img/logo_dark.svg" alt="AdGuard" class="themedImage_so_i themedImage--dark_ACJn">

Steps to reproduce:

1. Open https://adguard.com/kb/ in Safari 26.4 on macOS 26.4.1.
2. Observe the logo in the header shows as a blue question mark (broken image icon).
3. Open the same page in Firefox — the SVG renders correctly.

Expected behavior:

SVG logo should render normally in Safari like it does in Firefox.

Observed behavior:

Safari shows a blue question-mark broken-image placeholder instead of the SVG.