Syntax highlighting gets messed up when enabling "Ignore Whitespace"

### The problem

When I enabled the option to ignore whitespace, the syntax highlighting seems to get a bit wonky. Here, "isStatic" has three different colours, and the subsequent line also has odd colouring.

If I untick ignore whitespace, everything returns to normal:

(if it matters, the language here is Dart)

### Release version

Version 3.5.6 (x64)

### Operating system

Windows 11 Pro

### Steps to reproduce the behavior

- Modify a file
- Review the diff in GitHub desktop
- Enable the "Ignore Whitespace" option in the diff viewer

### Log files

_No response_

### Screenshots

_No response_

### Additional context

_No response_