This was the best bug report ever. Would love more if you've got them, even if their not exactly bugs, the feedback is great! These are a very good example of why not to shoehorn shit in at the last moment. New hotfix is out!

New features are bound to cause bugs, yeah. Especially when there's not a lot of time to test for them. In some cases, though, bugs just crop up in places you wouldn't expect. I think my revised list has a few. I removed the bugs you fixed and edited the ones I reported, but didn't seem fixed yet. Some have new details I discovered while checking over what you managed to fix. Which was more than I expected for a short period of time between my report and your reply. Anyway, here's the full list of notes with some new additions. Some which are new because of the patch while others I either discovered after reporting or didn't note down / report.
Also included the notes of things I suspect could be bugs, but can't be sure. Some I used to be unsure of, but have since graduated. Anyway, here's the list. Might be longer than the first. Also a lot of these were written in a previous patch. I went over them to make sure they were still accurate to this hotfix, but I wouldn't trust myself to say it's entirely up to date. I tried to make it clear which ones were updated by mentioning the latest or older patches. Many notes I left alone though, which probably means no change between patches.
Main Bugs
(if you're not supposed to use Q to exit vehicles, then see the next report for details).
(Side note: I did not realize left click changes the camera view on the Wunder. Might be nice to include a way to view vehicle controls in the future. Along with any other secret controls like the 1 & 2 key for handheld weapons.)
(I forgot to test the other islands after writing this in my notes.)
Visual Bugs
(I don't think it's entirely random, but the only time I noticed it happening was after unpausing my game when I tabbed back in moments prior, hence why I mentioned it could have something to do with pausing, but I couldn't recreate this bug.)
Part 1/2 because character limit.
Part 2/2
Maybe Bugs
(Because of the pistol issue, I couldn't test this in the latest patch to see if it was the same deal.)
(I haven't been able to repeat this in the newest hotfix. All that I've noticed is the camera likes to see the other side of walls when I back into them. Other than that, seems like it's either fixed or rare and I got unlucky previously.)
(Note: this was observed in the Punny patch. That zip name surprised me when I saw it btw lol.)
(Unless the horse is just special and no other vehicles can do this. Didn't think to test every vehicle for this feature.)
That's my entire list as it is so far. If I play after this report, there may be more. Hopefully not. At most some notes will probably be updated if I come across new info while messing around. Gotta say, though, that fun cannon sure did launch me. If you were curious, my first reaction was "Oh my God!" and while I didn't report this as a bug... I did aim at the platform at one point and made a home in a shipping container. Tis a dangerous fun time cannon.
I was worried I'd hit the character limit.
I'm someone who plays Bethesda games, the amount of bugs your game had from this update can't compete with that, so don't beat yourself up too much. Besides, you're pretty quick with the hotfixes. As for Discord, I don't often join Discord communities, but I'd be willing to join if you'd like me to. I'm not adverse to joining Discord servers to be clear, just not many I've had an interest in. Though at this point I am interested where you'll take this game.
Can't promise I'll be doing this consistently, but it was fun playing the game and figuring out how to retrigger bugs I came across. All that was just from exploring the world and playing the game basically. I haven't even finished exploring the world yet, there's still stuff I saw in the distance I hadn't poked at.
Actually while I remember this, there's actually a bug I completely forgot to write down. I'm pretty sure I know why it's happening, but the boss fight in the mech has an issue. In my own stupidity of backing myself into a corner. I touched the walls of the arena and got teleported outside without the mech. I'm guessing this is meant to keep players from just taking the mech and leaving along with a boss being spawned.
I think the trigger is a bit too close to the inside of the arena, if this is the case. If not, then idk why that was so consistent and kept despawning the boss. On the note of the mech, it also stays wherever you got kicked out of it. I know vehicles don't really have a way of "finding their way home", but after the second backing into a wall I could not find the mech. Mostly because I wasn't paying attention to my surroundings... Hence backing into a wall.
With that random surprise bug report in the middle of my reply out of the way, sure I'd be glad to help out. I'm assuming it'll be easier to sneak the code to me through Discord once I join the server. I'll do that when I wake up, cause it's currently 3am for me. I have a terrible sleep schedule. I probably was going to say more, but I distracted myself with another bug report lol. I'll try to poke around whenever there's a new update or hotfix cause I do enjoy messing around in the game at the very least. But again, no promises it'll be consistent. Though I can promise that when I do get to it, I'll be spending plenty of time testing things.
Anyway, I should sleep now. Can you tell I like writing?