Noticed it happening around 6 months ago. An item can have 10 views and in the next day or so it could drop down the 7, but someone mentioned it could be ebay removing bot views. No idea how that all works but it kinnda made sense.

Have one listing at the min that has 0 views but has a watcher? that's pretty weird.

It is pretty annoying though as  used to gauge interest in items via the views and adjust prices if a item had a lot of views but wasn't selling, but it's just  unreliable now and don't take any notice of them.