A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
I have the same problem. With the last Office update the problem continues.
With the help of a moderator I’ve found that build 16.0.13628.20274 is not affected. Them, a temporary solution is to reverse office to that build and stop Office updates. Problem is that build 16.0.13628.20274 has others bugs.
Please, if anyone has the same issue, report it to Microsoft to see if the bug is solved. Thanks.
Temporary solution:
Run command line as administrator and type:
CD C:\Program Files\Common Files\microsoft shared\ClickToRun (enter)
officec2rclient.exe /update user updatetoversion=16.0.13628.20274 (enter)
Stop immediately Office auto updates.
Reboot
Thank you, joaoluis, for posting this temporary solution. I followed your instructions and the ink problem is resolved. As you say, this is a temporary solution as it is not possible to benefit from Office updates, but at least I can use the inking/drawing feature in PowerPoint, which I need daily in my online telehealth work!