You can no longer glide in the air by turning upside down. Major setback for GTA V, but I need to try it out more to figure out exactly what's changed.

UPDATE: They've screwed bike stunting hard. Testing cars now.
UPDATE 2: Cars handle the same, no changes.

UPDATE (22nd March 2014): YEEEEEEEEEEEEEEEEEEEEES!!!

https://support.rockstargames.com/hc/en-us/articles/202235838

Thank you to everyone who constructively posted in this thread. I have seen confirmation that Rockstar read it. Thank you to everyone who upvoted the Reddit thread (despite those whose downvoted it), and thank you to those who posted on Rockstar's Newsire and/or Community Support. One more big thanks to GTAVStuntMen for uploading his video, and finally, a huge fucking thanks to Kwebbelkop for pushing our cause.

Without our combined efforts, this would have never changed. So much relief . Thank you Rockstar .

Nightmare already posted this video, but for the sake of keeping it all in one thread...

GTA 5 STUNTS ARE BACK! THANKS @RockstarGames

In the past, you could hold your bike upside down to gain height, and lower the effect of gravity on your descent. Now, they've completely removed this function. Doesn't matter if you do a backflip, frontflip, the bike reacts the same way from a bump no matter what you do. This means that most of the big airs landed so far are now completely impossible.

EDIT: This is what I'm on about.

STUNTING IN THE NEW UPDATE (1.11) (Explanation)

Petition - http://www.ipetitions.com/petition/add-the-gliding-ability-motorcycles-bmx-back-to

Not to be a dick but I'm glad they removed it. That stunt from video you posted looks just retarded. He is flying with a bike like it was a plane. Come on just look at it

The only problem is that now you have tiny bumps across the board. It's basically killed bike stunting in this game, and invalidated months worth of stunts. They haven't made the game better by removing the glitch, or solved a problem. All they've done is make the game less valuable.

Imagine if they released an update to GTA San Andreas that prevented you from doing the RADs method, or increased the gravity twofold. This is the level at which they've changed stunting in GTA V.

Well, it's mostly to do with the BMX Flight Glitch. It works in the same way as motorbikes, but because the BMX has such a low mass value, it can effectively fly around forever. But the behaviour that allows the BMX to fly is shared by the motorbikes, so they've ended up nerfing motorbikes too, which I doubt was their intention. The video I've linked is a pretty extreme example of gliding with motorbikes, you can't fly forever.

If they don't revert this change, motorbike bumping in GTA V will die. It's as simple as that.

That was really unexpected, never ever thought a stunting-nerf like this would be introduced into the game haha. The fact that the game isn't a major floatfest anymore is nice, but they took it to the extreme by the looks of it.

How accurate is the post-patch clip in the video? Is that all the air you can get by bumping, or did he exaggerate/bump it wrong?

Will someone do a post on the subreddit of GrandTheftAutoV so it gets more attention ? 

Oh god Rockstar... You're trying to ruin GTAS!

It's a shame they didn't only change it for pedal bikes I guess. Is it just me or does it look like they have made bikes fall faster even when the right way up?