BUG: Sometimes Flow Launcher doesn't highlight letters

### Checks

- [x] I have checked that this issue has not already been reported.

- [x] I am using the latest version of Flow Launcher.

- [ ] I am using the prerelease version of Flow Launcher.

### Problem Description

Good example of Flow Launcher highlighting letters below:

But sometimes this does not happen:

### To Reproduce

1. Write anything in Flow Launcher to trigger a result that's not from "Program" or "Windows Settings" plugin;
2. Experience no letter highlighting.

### Flow Launcher Version

2.0.3

### Windows Build Number

10.0.26200.7628