Some of the bugs fixed in 1.4.3 include:
- Don't show contact details custom fields in the message template when privacy checks are applied
- Prevent malformed BB code from being used to potentially bypass certain signature tag limits
- Update Facebook video to use Facebook's new display/embed method
- Adjusted the timezones phrases to handle changes from the last few years (most significantly in Russia)
- Change the stats table to store results in a bigint to support days with values greater than 4 billion
- Fix cached like updates when deleting a user
- Move IEMobile detection to ensure it is always triggered when it should be
- Fixed the smilie tabs not working correctly with multiple editors on a page
- When creating a thread, allow the poll question/answers to be restored from a draft
- Ensure a username is shown for reports of content created by guests/deleted users
- Fix alignment of LTR names in RTL languages in Firefox
- Fix a situations where, with small screens, the visitor tabs would be hidden unexpectedly
- Do not send thread author alerts when action is taken against a thread redirect
- Fix the user state not being applied correctly in all cases in the phpBB 3 importer
- Limit the number of unused attachments deleted at a time to prevent memory issues
- Prevented tooltip flicker in several places