"This instance is private" error when using "Create Post" button on community page

[sam365724]

Issue Summary

Create post not working (timeout + error) when using this button from a subscribed community:

Steps to Reproduce

1. Go to a subscribed community
2. Click on right button create post
3. Observe error "This instance is private" and page going white, not loading.

PS: Refreshing the page with the same URL works, the form shows up.

Technical details

0.16.6

lemmy_1     | 2022-08-24T04:23:26.578959Z ERROR Websocket Request{trace_id=00000000000000000000000000000000}: lemmy_websocket::handlers: Error during message handling instance_is_private: instance_is_private
lemmy_1     |    0: lemmy_api_common::utils::check_private_instance
lemmy_1     |              at crates/api_common/src/utils.rs:270
lemmy_1     |    1: lemmy_api_crud::community::read::perform
lemmy_1     |            with self=GetCommunity { id: Some(CommunityId(2)), name: None, auth: None }
lemmy_1     |              at crates/api_crud/src/community/read.rs:23
lemmy_1     |    2: lemmy_websocket::handlers::Websocket Request
lemmy_1     |            with trace_id=00000000000000000000000000000000
lemmy_1     |              at crates/websocket/src/handlers.rs:68

Potential root cause

auth is missing from the websocket request:

[sam365724]

@dessalines Maybe this is a lemmy server issue?

[sam365724]

Potential problem here?

lemmy-ui/src/shared/components/post/create-post.tsx

Line 91 in 53e973c

auth: auth(false).ok(),

Do we need to pass " auth: auth().unwrap()," here too?

@dessalines This is an important issue for me as all users run into this problem and most don't know how to workaround. So they are unable to post any new things .(
As I think i found the root cause and potential fix, maybe you can look into it?