Hello,
The issue you’re facing appears to be originating from a theme or plugin conflict. TranslatePress doesn’t control the styling of elements inside the menu bar since it is governed by your WordPress theme.
To isolate the issue, let’s try switching to a generic WordPress theme temporarily. If the problem disappears when using a default theme, that means your current theme may be causing the conflict.
After performing these steps, if the issue still persists, please let us know so we can further investigate this for you.
Best regards,