Text within Cell disappear as you press anywhere else, but return as you press save

Hello everyone,
The situation here is that when ever I press outside the box or press enter upon typing, the text magically vanishes. However, it comes back when ever I press save.(inline view)
The app has been in place for several weeks running without any problem until today.
Any thoughts on this?

This is what happen when I press enter.

Subsequent to pressing “Save”. The typed text display as normal.