Windows 10 Mobile native Messaging app has snagged an update. The latest version 1.11.2003.0 doesn’t bring any noticeable changes and you may not like to update to this version. Reason being, the app crashes on trying to open a Text message and even while trying to create a new message.
So, may be you can hold and wait for next fixed version of the Messaging app. The crashing issue isn’t fixed even with reboots and soft resets.