[Bug] Background effects aren't applied after a refresh.

[Lizrard]

Description
The background blur and brightness effects aren't applied when the tab is refreshed or a new tab is opened.

To Reproduce
Steps to reproduce the behavior:

1. Adjust blur and brightness effects in the background tab in settings.
2. Open a new tab or click refresh.
3. Notice that the background effects aren't applied.

Expected behavior
New tabs that are opened still have the blur and brightness effects

Additional context
The sliders in the settings tab aren't reset when opening a new tab, it's just that the effects aren't applied. Clicking on the sliders reapplies the effects.
I've also noticed that this bug isn't present when you have a background filter set.

I'm using Mue version 6.0.3 on Chrome version 96.0.4664.110