In Vivaldi and Chromium, as of around 7 months ago, when I believe they switched to fontations, they stopped rendering characters with dots in them, including ij.:; I'm using Linux Mint 21.2, based on Ubuntu 22.04. I have a Helvetica font installed on my computer, when most people probably don't. It is the same as this file: https://github.com/stef-gelsomino/technotes/blob/a63f33120a902e19b4f1a371d8738d40b6c631a8/helvetica.otf
Older versions of Chromium used to render the font correctly, and Firefox on my computer still renders it correctly (when Firefox devtools says it is using Helvetica).
Many sites use Helvetica if it's installed, like for example GitHub. Here's a screenshot of the fontations README:

In Vivaldi and Chromium, as of around 7 months ago, when I believe they switched to fontations, they stopped rendering characters with dots in them, including
ij.:;I'm using Linux Mint 21.2, based on Ubuntu 22.04. I have a Helvetica font installed on my computer, when most people probably don't. It is the same as this file: https://github.com/stef-gelsomino/technotes/blob/a63f33120a902e19b4f1a371d8738d40b6c631a8/helvetica.otfOlder versions of Chromium used to render the font correctly, and Firefox on my computer still renders it correctly (when Firefox devtools says it is using Helvetica).
Many sites use Helvetica if it's installed, like for example GitHub. Here's a screenshot of the fontations README: