Progress animation (and problaly others) don't working in some browsers

[Pinheiro-Reis]

When I navigate in Firefox, LibreWolf or Vivaldi the animation of progress simply don't appear (accessing links, updating pages or anything), but appears in the test site. In Thunderbird, instead, navigating in themes and extensions site, this works normally. I'm using Arch Linux and I installed this from AUR using "yay".

OBS: Sorry for my English