Highlighting broken for some search results

Steps to reproduce:

1. Open qtdeclarative\src\quicktemplates2\qquickdial.cpp
2. Hit Ctrl+F and search for "touch"

This line will only have a 1-pixel-high yellow line highlighting the top of the search result. This one won't be highlighted at all:

Other lines with results on them are highlighted as normal:

The highlighting works when Creator is first opened, right until the (bogus) clangd errors come up:

Qt Creator 8.0.0
Based on Qt 6.3.1 (MSVC 2019, x86_64)

Built on Jul 19 2022 08:06:48

From revision 5c341854e0