Blank Blocks in kali terminal

There are 'Blank Blocks' in my kali terminal. It usually happens in links. I'm not sure if it's an issue with fonts but I did try changing it. I tried to google it but I couldn't find anything relevant. I'm not sure if the issue is with kali or the VM.

I hope these screenshots help. Let me know if you know why it's happening.
I'm using Kali VM in VirtualBox on Ubuntu.

Issue solved.
Close the terminal.
Delete qterminal.ini in /home/kali/.config/qterminal.org/
Restart kali.
That should reset the terminal and solve the issue :)