Nothing major, just reporting.
There's a bug in the GUI of the Stack Exchange mobile app for iOS for which a submitted edit's title and tags will be displayed as removed if they haven't been touched at all:
As you can see, the title and the tags haven't been touched at all during the edit:
Here's the link to the original question: Differenza tra "di" e "da"
Stack Exchange mobile app for iOS v1.3.2 (latest version at the time of writing)