Wrong site icon shown when call ERC-20 contract “approve”

[crackwei]

this react logo appeared when user call the USDT contract “approve” function on metamask mobile. but it's the wrong logo, I wanna show the site logo.

But it works well on computer.

REL “icon" and "shortcut icon" tag has been set on the site main webpage, but they don't work. it seems that metamask read the cache from a certain server direct.

<link rel="icon" type="image/png" href="%PUBLIC_URL%/favicon.png" /> <link rel="shortcut icon" type="image/png" href="%PUBLIC_URL%/favicon.png" />

who knows how to fix this issue?