This is a bug-fix patch. There are no new features in this release other than the two [NEW] items mentioned below. And those two items are extremely minor.UBB.threads 7.5.9p2 (2017-08-20) PATCH Changelog
[FIX] Prevent UTF-8 Charset Type from setting itself as default.
[FIX] Remove Encoding Type from RSS Feed.
[FIX] Remove NewLine From Header.
[FIX] Remove NewLine From RSS Feed.
[FIX] Default forum language is used if user language is not set.
[FIX] Group Images are removed when a user is removed from a group, such as due to a subscription expiration.
[FIX] Invalid chars are filtered from the topic subjects.
[FIX] SEO URLs are now proper.
[FIX] Change Mood window now works on Firefox and IE.
[FIX] Navbar items wrap correctly. They no longer wrap in the middle of a single menu item.
[FIX] Portal post body is displayed using the post-content style.
[UPDATE] Admin > Style Editor received a very minor display layout update.
[UPDATE] Number formats (commas for long number strings) are now used in several different places.
[NEW] Extremely limited Mobile support. Left/Right columns hide on mobile devices. Images only expand to the width of the device's display. Poster's information on left of post, will instead display on top. These are extremely basic implementations. IE8 does not respect mobile layouts at all.
[NEW] Avatars next to post, now link to the member's profile page.