1.4.3 is a bugfix update released on April 27, 2018 alongside a bugfix update for the Making History expansion.

Changes

Log messages improved on startup.
Tweak camera system to reduce the green line over water.
Clicking on Launchpad and Runway no longer check/clear them of vessels until you click launch on the vessel launch dialog.
Vessel ground positioning for landed vessels improved (Default is true).
Added kerbal animations when parachute is deployed.
Added ability to deploy parachute when kerbal is in command seat so that players can create paragliders.
Default terrain settings for low detail have been increased to reduce terrain and object issues using this setting.

Gave the white fairing a good washing - it is now a brighter white and more consistent with other similar shaded parts.
Adjusted the node size on the “Dawn” Ion Engine.
Decouplers will now properly remove their icon after staging

Fix an issue that was causing excessive drag in fairings.
Fix UI for Linux offset issues.
Fix Contracts parameter completion log and SMS App firing in all cases.
Fix suspension for wheels and legs when vessel coming off rails from bouncing.
Fix landing legs sometimes exploding on contact with ground.
Fix the context menu when single click on orbits lines allowing to set target.
Fix persistence of data when switching to unloaded vessel via map view.
Fix vessel MOI not being correct when control from here is not the root part of the vessel.
Fix reentry VFX being broken by parts which don’t have a scale of one.
Fix IVA overlay camera showing artifacts on high specular parts.
Eliminate possibility of having two tourist/recovery contracts with Kerbals with the same first name.
Fix for missions or saved games names containing invalid characters freezing the game.
Fix for music system to play tracks from the beginning when changing scenes. Music now also correctly pauses when game is paused.
Exclude parts with no crew capacity from recovery contracts.
Fix NRE on flagpole when SC buildings are destroyed.
Fix ground positioning on Tutorials and Scenarios that start with landed vessels.
Fix for KSC markers overlaying launch dialog on return from Astronaut Center.
Fix some Z-Fighting issues with the Rockomax 64 tank

Fix vessels disappearing from map view when procedural drag cubes are generated from root part.
Correct the order of text returned in ConfigNode.ToString.
Allow bypass of PatchedConics CheckEncounter log message for mods.
Add onWillBeCopied and onWasCopied to Part and PartModule class.
Improved difficulty settings scroll panel to accommodate many mod entries.

References