Exclude a folder from Search Everywhere/Go to File Follow

We have a folder with auto-generated JS. It's not included in .csproj, it's ignored in VCS (Mercurial). R# is not suggesting files from the folder in any of Go to commands.

Rider does, both in Go to File and in Search everywhere (in the Files section).

It highlights the entries from ignored folder, so I guess it somehow knows that they are to be ignored. Can it hide them?

Here's a screenshot http://i.imgur.com/Y4nwOBl.png

Already tried the solutions from these threads:

https://rider-support.jetbrains.com/hc/en-us/community/posts/115000527504-Prevent-folder-from-being-indexed

https://rider-support.jetbrains.com/hc/en-us/community/posts/115000247464-How-to-ignore-exclude-all-files-under-a-directory-or-a-certain-file-type-from-inspection-?flash_digest=ade2e26ea148abe50b5938f315d2e16e90348aca