Feels like a font issue. Do you have e.g. nerdfont installed and in use in your terminal? You could check the config for plugins that makes that style, and check which fonts are in use. Could also be powerline fonts that are needed: https://github.com/powerline/fonts
I sent the support an email asking about that, because I had to use my bank for strong authentication, which made it weird that they still required me to send a photo of my id. I said I don’t want to do that, and they just verified my account.