Deleted posts show up on sidebar as related posts

[RamRS]

Deleted posts are appearing as related posts in the sidebar. Here is an example where the top 2 posts are both deleted. The first was deleted by the OP and the second by me (as a duplicate of the post being viewed).

The post being viewed was created 14 days ago and bumped by me 2 hours ago, when I deleted a new post that was created for the exact same topic. This now-deleted new post shows up as item 2 in the sidebar.

[Natay]

Thank you for letting us know, we need to remove deleted posts from the index.

[RamRS]

Is this done? How do we verify if this will happen again?

[Natay]

We have not merged it to the main branch yet, we will notify when done.
There will no longer be deleted posts that appear in the side bar since they will be removed from the index on deletion.
We test out locally if deleted posts are not indexed and already indexed posts that are deleted are purged from the index.