At some place in London there is an empty space between the sidewalk and building:

In the Golden Gate side, the flyover has missing bound:

Empty place between the footpath and grass near the player spawn point:

Pier edge not visible when you are on the ship:

And on this road the actual road is invisible in air:

The next bug is a bug that everyone should have seen. Traffic cars do not turn wheels while turning.
And, an RV5 bug:
Sometimes while going back to the city after visiting Bay Bridge, you can crash with an invisible wall:

Though Dummiesboy had told me that this bug was very difficult to remove and that's why he cancelled Revisited V6. And, this is very rare.