Wednesday
Wednesday - last edited Wednesday
Wednesday
Are you using a custom theme and or icons
Wednesday
Wednesday - last edited Wednesday
Wednesday - last edited Wednesday
Thursday
I have exactly the same issue. The new emails are in bold, but not bold enough to be seen easily. Unfortunately can't put a screenshot of my inbox due to privacy.
Thursday
I just noticed that using the dark theme partially solves the issue. Since in dark mode new emails are in white font and the read emails are in gray font (as shown in the screenshot above), this helps a bit.
Friday