The setting icon at the bottom-left corner is not background-transparent

The setting icon at the bottom-left corner is not background-transparent since it was first added.
But a global texture background add at ab6541a makes this issue more obvious.
<img src="https://user-images.githubusercontent.com/35174145/106239314-598ef400-623d-11eb-9768-50bc59df1bcf.png" alt="drawing" width="400"/>