[tsac]

I would suggest it may be a recently added or upgraded App may be causing the interference or caused some corruption. If you have a backup of the phone or if not make one using the free program from Blackberry called LINK and then do a wip of the phone causing the phone to revert back to factory.
Once back to factory levels test the phone for the basic operation such as calls, text and data. you will need to manually add back some of the contacts and user data such as email user data.
Once your sure the phone works like before, you can use the backup data to reload the phone. DO NOT reload any apps you may have added. Once you check again then load Apps you added one at a time to see if one is causing the problem.

The general use of texting should work as before on all cell phones.
It is highly unlikely Verizon made changes causing this change.

An associate of mine also has a Verizon Z30 phone and it works as expected. All text messages are shown and flow as you want.