I am using a 64 bit laptop. I’ve not had a 32 bit computer for years now. This is not a bug, but a bit of carelessness. What’s inside the user’s folder is user’s, including the hidden files. Your thumbnails live in .cache, and if you can’t see the image thumbnails in ~/Pictures, you consider that Nautilus is buggy. But, it is not the case – Nautilus can’t just open/read them, for it doesn’t have the permission.
An example of another blocked folder in .cache…
And, there’s nothing there in that folder by the way, strangely.
The thumbnails should not have to be blocked, from the beginning.
(Btw, this is not happening with the Nautilus that comes with Ubuntu Budgie.)