Hello,
I am also using Corona and WPML. I fixed this like this:
1. Corona Theme Options > Logo : leave this blank
2. Replace logo.png with transparent image.
3. Check from webpages source code what are current language shortcodes: <html dir="ltr" lang="Your language">
4. Corona Theme Options > Styling : Quick CSS:
html:lang(Your language) .bg-logo {
background-image: url('your image');
width: 100px !important;
height: 100px !important;
background-repeat: no-repeat;
}
html:lang(Your second language) .bg-logo {
background-image: url('your second image');
width: 100px !important;
height: 100px !important;
background-repeat: no-repeat;
}