1.5 quirks: days of posts and default author selection

The option to “Display at most X days/posts” does not seem to work properly any longer. It displays X number of posts even when set on days.

In addition, when creating a new post, the post-author is no longer properly selected. That is, the user chosen by default as author of a new post is not the logged in user, but the first user in the list.

In 1.2, users of the same level could edit each other’s posts. I prefered this behavior, is there some way to easily reinstate it? Amusingly, users of the same level can create posts for each other. This makes for an annoying situation where a user can create a post but not edit it.