Odd look for WiFi strenght bars on Shelly Plus H&T

Not a very important issue, but since I've some attention to the details, I noticed the WiFi signal strenght bars on Shelly Plus H&T present a weird look.
The space between the first two bars is noticeably wider then space between the others.
I don't think this would be an effect of limited ink display resolution, hence it should be an easy SW fix!?