Monsters flying into the air after i kill them
Dozens of rats running in a straight line one behind the other (early quest)
Drowners standing up on the surface of the water, viewed from a distance in a boat
Jerky animation of a surfacing whale, also viewed from a boat
A sword floating in the air, on the street in Novigrad
The barons daughters hair dissapearing and reapearing

Add to the list if youve noticed anything else funny or strange.

Why are these not widespread problems???

I have not had any issues mentioned either in the OP's comments or the video.

Strange...

Haha that pose the 2 dead drowners froze in at the end of the video was the same pose as the ones standing on the surface of the water when I seen them in game.

There are relatively a lot of weird things happening. You just have to explore a lot, you tend to come accross more of these than you'd like to.

It's sometimes fun:

https://www.youtube.com/watch?v=CQItSTm2p0Y

or just weird bit annoying

https://www.youtube.com/watch?v=NI0oIQhijWU

but sometimes, it's really aggravating...

https://www.youtube.com/watch?v=PfMDAEHtu8g

I don't know if it's something weird to my install of the game though. I've been thinking maybe I should redownload the whole thing and do a fresh install just in case.

You've seen nothing yet. Drowners swimming above water.

I have come across these too.

I have also found a few items floating in random places. In one camp in Velen, found four horses, two pairs of them were on top of each other, when they moved their heads, it looked like two headed horses, haha.

I've noticed a few weird things (people spawning inside other people) and the occasional monster that is hovering above the ground. So far the strangest bug I have started when I tried to dock a boat that I was on, near a small riverside town (Sorry I can't remember the name or location).

I knew I was in trouble once I appeared to disappear though the river bank. I had forgotten to save it for quite some time, so I was panicking, I tried to dismount the boat and suddenly things got really weird.

I was swimming under the ground briefly and then, I teleported high enough above Velen to qualify for a few Kerbal space program achievements.

From this height, I can see everything, the entire map. And I start falling (I can't see my character at this point, so I was expecting to reload), eventually the camera hits the water and there I am swimming about 30metres away from the boat that started this bug. I avoided the boat and continued on and saved.

Hopefully that bug wont see some crazy repurcussions down the line :)

Yes ive seen the horse thing as well, that was really weird because the horses where 2 different colours and when they moved it did a morphing colour kind of effect, i watched that for ages because it looked kinda cool.

https://www.youtube.com/watch?v=lmUi1Tez_lA

I'm going to quit playing for 6 months. Wait for them to get their shit together with the "enhanced" edition. Also known as "we finally fixed all, well most, of the bugs we added. yay" edition.

I have lawns to mow, cats to feed, real people to interact with.

Graphical bugs are now worst than ever since patch 1.04. I'm not going to update to 1.05 after I finish my second playthrough. This is just too much.

I'll stop definitely and wait for the enhanced version as it is already breaking the "fourth wall" for me.