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Since updating PD I have been unable to edit any motion graphic, including the ones I've previously edited. There are no editing options when calling up the editor.
Additionally, the Titler no longer has any way to center words or sentences in the title window. Something is terribly wrong with the update, at least on my system.
You're the first with these issues, and it sounds like something went wrong during installation. You didn't tell us what you updated from or to (PD19 or PD365), but I think you should uninstall PD (keep any personalizations, if prompted) and install it again.
If you have 365 you can do that all from the App Manager. If you have PD19 you'll want to use the Windows uninstaller on the Settings | Apps & features page and the run the PD19 installer again.