Highlighting / Cross out / Mark ups disappearing

[Luke Von Pein]

I have an issue with Nitro where review functions like highlighting and crossing out etc will stop displaying on the page randomly. It appears to happen mainly when you save the document. The highlighting or crossing out will still be there in the background in terms of a box that you can click on and delete... you can still select it but it does not visually display. This is obviously very frustrating. Closing the document and re-opening does refresh the page and restore the highlighting etc to visible again. It shouldn't require this and is a very frustrating fault. 

I have Nitro version 13.70.4.50. I have tried uninstalling and reinstalling and updating to latest versions possible. 

[Ryan W]

There are also issues with shapes disappearing under certain circumstances:
 

Yet nobody has addressed it.