[REGRESSION] Visited links aren't highlighted as such

Version info:

qutebrowser v3.7.0
Git commit: 
Backend: QtWebEngine 6.11
  based on Chromium 140.0.7339.225
  with security patches up to 146.0.7680.80 (plus any distribution patches)
  (source: api)
Qt: 6.11.0

Does the bug happen if you start with --temp-basedir?: Yes

Description

Since update 3.6.3-2 -> 3.7.0-1 visited links (at least on Phoronix) no longer highlighted in gray.

How to reproduce

1. Open qutebrowser --temp-basedir https://www.phoronix.com/
2. Open the first link on the newly opened QB in a separate tab, then close it.
3. Look at the main phoronix page, try to reload it, check if the link you just visited has different color

Expected: it has distinct color that hints that it was visited.

Actual: it has same color as other links.