invalid preview window layout: up:2:nohidden

**Describe the bug**
Typing command `navi` results in:
```
invalid preview window layout: up:2:nohidden
invalid preview window layout: up:2:nohidden
invalid preview window layout: up:2:nohidden
[1]    25537 segmentation fault  navi
```

**Versions:**
 - OS: [WSL (version 2) - Ubuntu 20.04]
 - Shell Version [zsh 5.8 (x86_64-ubuntu-linux-gnu)]
