If you edit an article from a blocked IP address in mobile VE, it provides no warning that you are blocked from editing. Instead it let's you perform the edit but then prevents you from saving the edit once you are done. In many cases, this will cause the loss of edits, especially for editors who have simply forgotten to log in and are included in an IP rangeblock (which is common).
Thank you for raising, @kaldari. Being led to believe you're able to edit when you are in fact not able to and not being given feedback as to why is frustrating.
What is being done about this?
Assuming T221400 and T167078 are connected, we will be resolving them as part of our work this quarter to experiment with VE being the default mobile editing interface on a select number of wikis. See: T221190
Edit: striking through the need for @matmarex's input on the question above