I have the same issue. Fujitsu laptop, docked with 24" screen. I read this with a heavy heart seeing "upgrade", "reinstall" etc With no disrespect to the support people involved have you ANY idea of how much effort is involved in doing so?
For me it is completely replicable - Italic on, cursor disappears, italic off it works. 100% repeatable so 30+ years in the IT trade tells me that means it is 100% solvable if the issue is raised with the right people.
I have joined this thread, not to moan, but to be informed if a fix is delivered.
In the meantime I am forced to remove all italic text from the documents I am using and considering we have used red italic text to provide instructions how to complete our documents, that's a LOT of work.