How to get WSL working with FluentTerminal on Windows Server 2019?

Configuration:
```
C:\Users\jackl>wslconfig.exe /list
Windows Subsystem for Linux Distributions:
Ubuntu-18.04 (Default)

```
Install Path:
```
C:\Ubuntu>dir
Volume in drive C has no label.
Volume Serial Number is AA52-106A

Directory of C:\Ubuntu

11/17/2019 03:29 PM .
11/17/2019 03:29 PM ..
11/17/2019 03:26 PM 212,438 AppxBlockMap.xml
11/17/2019 03:26 PM 3,835 AppxManifest.xml
11/17/2019 03:26 PM AppxMetadata
11/17/2019 03:26 PM 11,112 AppxSignature.p7x
11/17/2019 03:26 PM Assets
11/17/2019 03:26 PM 223,983,209 install.tar.gz
11/17/2019 03:26 PM 5,400 resources.pri
11/17/2019 03:32 PM rootfs
11/17/2019 03:49 PM temp
11/17/2019 03:26 PM 211,968 ubuntu1804.exe
11/17/2019 03:26 PM 744 [Content_Types].xml
7 File(s) 224,428,706 bytes
6 Dir(s) 975,234,510,848 bytes free
```

Environment:
- C:\Ubuntu is on both user and system path
- Typing ubuntu18.04 anywhere brings up bash

Problem:
- Fluent Terminal cannot open WSL by default
- Fluent Terminal cannot open WSL using custom profile with shell exec location: C:\Ubuntu\ubuntu18.04.exe