'Oh-my-posh themes not working correctly with Powerline font and ConEmu
I use PowerShell as my shell on Windows 7. I find that ConEmu is a really good terminal. Since I am not on Windows 10, I cannot use Windows Terminal but ConEmu is not bad at all. I found out about posh-git and oh-my-posh and how they can customize your PowerShell experience. I installed oh-my-posh and the Paradox theme looked nice. But I saw some empty boxes in random places in my Prompt. 
And this is an issue that I face on all the themes. The colors and the design are beautiful and I want to use it but those weird boxes are keeping me from doing that. I would also like to tell that I am using Cascadia Code as my font and also this is the Powerline version of Cascadia Code. So, I think it should work as excepted. Next, trying to fix this, I went to nerdfont.com and I installed Cascadia Code from there as opposed to Microsoft's official GitHub repository. Then I set ConEmu's font to Cascadia which I installed from nerdfonts and this happened:

It's better in a way that I can see the Python symbol and some more symbols but still there is one box that cannot be rendered. But it does get worse if I change repository:

There is a weird question mark after "master". I think I have met all the prerequisites to use oh-my-posh like install posh-git and PSReadLine and having powerline Cascadia Code font and also using ConEmu as they officially suggest. I would absolutely appreciate it a lot if anyone can help me out of this mess and suggest what to do to fix my prompt.
P.S I am using PowerShell 7 Core.
Solution 1:[1]
I faced the same issue and solved it by editing the following file: C:\Path\To\Your\WindowsPowerShell\Modules\oh-my-posh\2.0.496\defaults.ps1
Within PromptSymbols, there should be something called VirtualEnvSymbol. Just change the value from the current one to something from the above listed ones. For example,
VirtualEnvSymbol = [char]::ConvertFromUtf32(0x26A1)
Solution 2:[2]
Posting this response because I followed @HAL9256 's response and it was extremely helpful but I had to take it one step further. If you are using windows terminal, you actually have to set the terminal to use the nerd font. This took me far too long to figure out so hopefully it helps the next person.
In windows terminal, open the settings, then the Defaults on the left blad, then the appearance tab, finally change the fontface to something nerd font
https://www.jondjones.com/media/rhzobluq/customise-your-powershell-prompt-like-a-boss-c.gif
source: https://www.jondjones.com/tactics/productivity/customise-your-powershell-prompt-like-a-boss/
Solution 3:[3]
I've encounter the same problem and was solved installing the fonts.
- Download the fonts at https://github.com/microsoft/cascadia-code/releases
- Unzip
- Right click on the font and select "Install the font for all users"

- Enjoy !
Solution 4:[4]
Just install this whole Cascadia Code font and it will work no need to modify the theme settings.
https://github.com/ryanoasis/nerd-fonts/tree/master/patched-fonts/CascadiaCode/Regular/complete
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Shayan Shafiq |
| Solution 2 | apinostomberry |
| Solution 3 | |
| Solution 4 | Shubham Freelancer |
