I have Facebook, Twitter, WhatsApp and LinkedIn icons, both general and post sharing. The general buttons are set to coloured icons. All look fine on Windows, but on Android the WhatsApp and LinkedIn icons are grey (general and post sharing).
The post share buttons are always gray or blue, that depends on your regular links colors. Post share buttons don't have colors. Also, on mobile the general buttons are hidden, I don't see those. Please leave some screenshot of your android device.
If the post sharing buttons are set to "square" the Facebook and Twitter icons have blue square backgrounds,the WhatsApp and LinkedIn ones do not. If i set the buttons to "figure" they all look the same (none of them have the blue square). I'm happy to leave them set to "figure".
So, just the General buttons, i've added all six for now. The General buttons are only hidden while the phone is held vertically, rotate it 90 degrees and they are shown.
Set to "Button and count". On the laptop and on the phone (rotated), the WhatsApp and LinkedIn buttons are not shown.
Set to "Button" or "Icon". The buttons all have coloured backgrounds, except the WhatsApp and LinkedIn ones.
These two buttons were new in release 1.71, looks like something got missed out ?
Looking through the code in class-api.php. lines 422 and 452 indicate that WhatsApp and LinkedIn are not available if the "Button and Count" option is used.