Styles editor color preview showing wrong color (black)

[manyfew]

Steps to reproduce

Hi, I'm observing the following behaviour in the Styles Editor. As you can see, the color preview shows black instead of showing the correct color. Styling is applied correctly though, so it seems this only affects the color preview button.

Actual behavior

When I type in rgba(16,255,255,0.35), the color preview shows black.

Expected behavior

When I type in rgba(16,255,255,0.35), the color preview shows the correct color (turquoise).

System

Windows 11

Firefox version

131.03

Sidebery version

5.2.0

Logs

No response