It's in the closed beta 2.4 patch notes:
• Fixed the falling skimmer issue that could occur on planet surfaces
Listed in the spoiler section here:
https://forums.frontier.co.uk/showthread.php/372993-2-4-Open-Beta-Patch-Notes
Apparently you do not understand the concept of hot-fix.
A hot-fix is something a game dev does, if a game flaw routinely results in bad things. Like infinite money exploits, or a glitch that kills players instantly. Like falling skimmers. They hack in a quick solution, like disabling all landable-planetary-base skimmers completely. Which stops killing the players, and eases the reimbursement load on support.
And significantly improves the gameplay experience for everyone who wants to land on plants. It's generally not an elegant fix, but it makes the game work.
FD chose to not do this, however. My guesses range from incompetence to apathy, as I can think of no other reason why they would not stop a game glitch that is clearly killing people in an unintended fashion.
Here's an example: back in vanilla WoW, the boats were all kinds of broken a little after launch. They would get people stuck in limbo, requiring GM teleport-intervention to make them playable, or dump people in the water.
In response, Blizzard disabled the boats completely and put in teleport NPCs that filled the function, while they worked on a proper solution.
http://wowwiki.wikia.com/wiki/Captain_Placeholder
THAT is a hot-fix. FD either
cannot do a hot-fix for some reason, or does not judge unintended deaths as being important enough to hot-fix.