Outline-map shows much less items than the built-in outline

[QuarticCat]

Example project: https://github.com/QuarticCat/nbe-at-large/blob/160881a8916c5564955363c03b1505899157fb38/grammar/src/syntactic.rs#L96

With the rust-analyzer extension.

In VSCode's built-in outline view:

In the outline map:

[QuarticCat]

Here's one more example: https://github.com/archlinux/archinstall/blob/master/archinstall/lib/disk/filesystem.py

With the official Python and Pylance extension.

In VSCode's built-in outline view (I filtered variables):

In the outline map:

[QuarticCat]

It turns out to be the problem that these items are not automatically expanded. This issue might be duplicated.