To use these add-ons, you'll need to download Firefox.

Qqen
Tignit n uzegrir

Iceggiren i New Tab Override

New Tab Override sɣur Sören Hentzschel

4,4 n yitran ɣef 5
5
735
4
96
3
59
2
32
1
75
Tiririt sɣur Sören Hentzschel

Tiririt n ineflayen

yeffeɣ-d deg 7 წლის წინ
You can't use inline CSS.

I don't see a reason why it should work on the first tab and not in others. Please test with a fresh Firefox profile and report an issue on GitHub if the problem still exists.