About the text disappearing issue, We have fixed one issue related to disappearing text. The issue is :
"If we are having inline/anchored object and we apply any transparency effect (inner shadow, bevel etc) on inline/anchored object, now if we will type in the textframe then text as well as image will disappear for 3-4 seconds and then appears back."
The fix would be available soon in our next CC update.
I am not sure if you are facing a similar issue, but this is the one we have fixed. Please let us know if the you are encountering text disappearing issue in a different situation. A video would certainly help.
Thanks,
Dinkar