I started up a new avvie and found a bug that's new to me - nested Gira fish baskets! When I first checked the Age, I confirmed that the baskets don't vanish to the origin ( ), but the paired baskets seemed much harder to walk over than normal - I fell into the water four times until giving up. When I came back to Gira today and repositioned the basket that had moved to have yet another try, I discovered that it was possible to nest it into the other basket - afraid I don't know the technical term but clearly the first basket wasn't acting as though it was solid. This may be why I kept falling in?
I've not yet reset the age or tried to replicate this in other ways, but I took a screen shot.