Quoted @mention in tertiary color using wcag color scheme

I noticed some @mentions in quotes that look like links. Somehow, it only happens on my tablet, not when using my smartphone or computer. It also happens only when using the Chrome app, not Firefox or Edge. And it only happens when using the WCAG color scheme (I only tried light). But it does not happen with all quoted @mentions. It seems to depend on the user. A quote of “@JammyDodger” always appears blue. A quote of “@discourse” never does.

Without WCAG color scheme, both mentions look the same