Freezes when searching with "\"
### Version

moe v0.3.0

Git hash: 57c6e0b91250be7f666eaa2154f8a1d19fd13104
Build type: Release

### Environment

_No response_

### Category

Major — The software does not fulfill the task it is designed for.

### Steps to Reproduce

1. `/\`

### Detailed Description

_No response_