Created attachment 18858 [details]
As in the summary, when an Item inside a ListView is deleted, the item below is shown with the TranslationX of the deleted one. I attach an example project showing the bug.
This bug is reported here too: https://forums.xamarin.com/discussion/84340/bug-with-listview
Possible fix: https://github.com/xamarin/Xamarin.Forms/pull/637 (Not verified).
Still appears to exist as of 2.3.4-22-nightly based on the description