Before we get started, few important caveats :
-These are not the patch notes. Features, highlights, and the comprehensive list of bug fixes will be missing.
-This is not a comprehensive list of every bug fix in the patch.
-These bug fixes are subject to change and/or be removed. As we continue implementing fixes and testing them, some of these could get moved into other releases.
-TLDR - This is preliminary and everything is subject to change.

Here are some of the pending bug fixes for Game Update 5.3 :
-Improved Speeder Piloting 4 and 5 now works for all mounts.
-When creating a Cathar, the fur color 3 option will now be consistent regardless of what Cathar head is chosen.
-Players who are unable to retrieve Malavai Quinn or Elara Dorne from the Companion Locator Terminal should now be able to do so.
-Corrected an issue which was preventing players from progressing past the Infernal Council in the Eternity Vault.
-The following Decorations from the Nar Shaddaa Nightlife event can now be donated to a player’s Guild :
-Dynamic Underworld Ceiling Light (Blue)
-Dynamic Underworld Ceiling Light (Red)
-Dynamic Underworld Ceiling Light (Yellow)
-Gambler’s Bar
-Gambler’s Mic Stand
-Gambler’s Party Floor
-Items that have two-letter words in their name (such as Altar of Skulls) can now be searched on the GTN without having to remove the two-letter word.
-The Gamorrean Guard Companion from the Nar Shaddaa Nightlife event no longer requires Artifact Authorization for F2P and Preferred Status players.
-Master Mode Czerka Corporate Labs and Czerka Core Meltdown now progress the [WEEKLY] Galactic Conflict Mission as intended.
-Corrected a typo in the Mission [WEEKLY] Story Uprisings Mission which stated the player needed to complete 10 Uprisings, when they only need to complete 5.
-XenoAnalyst II from the Relics of the Gree event now drops Grey Helix Components as intended.
-Players who abandoned the Iokath Mission “Facing the Machines of War” can once again acquire it.
-Orbital Recon Probes will now always drop Orbital Recon Probe Memory Cores, even if they self-destruct (nice try, Orbital Recon Probes !). This is the objective of the Looking for Signs Daily Mission on Ziost.