Getting strange preselected auto-suggestions from Rust-analyzer

My setup:

Arch linux
nvim 0.8.3
nvim-cmp - latest
rust-analyzer - 646f973 2023-02-12

When i code and use the autocomplete functionality, i get suggestions through vim-cmp that gets the suggestions from the source rust-analyzer. If i enable preselectMode in vim-cmp it will autoselect whatever the source thinks is best.

From the vim-cmp docs:

preselect~
  `cmp.PreselectMode`

  1. `cmp.PreselectMode.Item`
    nvim-cmp will preselect the item that the source specified.
  2. `cmp.PreselectMode.None`
    nvim-cmp will not preselect any items.

The source here is rust-analyzer as i can understand it. But what i get is very strange selections.

Here i have started to write a non-capitalized variable name, in a place clearly for variables, and i get preselected a struct with a capitalized name.

Here when i do the opposite, started to write a capitalized name, i get a preselected suggestion that i want a non-capitalized variable.

If i even almost spell out the entire name i want, i still get a preselected variable from rust-analyzer.

Im not really sure if the preselections come from rust-analyzer or not. Im not super well versed, in this, and dont know really how to debug this. And im also not entirely sure if it is a fault in rust-analyzer, vim-cmp, or my config/setup.

If this is the wrong place to write about this issue, i apologize, and i will close it.

Reproduce the completion behavior with Arch Linux, Neovim 0.8.3, nvim-cmp, and the reported rust-analyzer revision, using the examples and screenshots in the issue. First determine whether the preselected item is supplied by rust-analyzer or selected by nvim-cmp, then compare the completion response with the resulting UI selection. Done means the responsible component and a reproducible fix or configuration boundary are established.