I've read the similar questions and answers regarding the Adobe Reader icon showing up incorrectly. I did find that the icon was coming from the Windows 10 Default App Settings for Photo viewer.
I have followed the steps in the post to remove and replace the icons, but that didn't work. I uninstalled and reinstalled Reader. Now, the icon is correct on the taskbar, the desktop and in the Start Menu tiles. It is incorrect when I click on the Start Menu list of apps, while staying correct in the other locations. Thoughts? I'm all out.
Screen grab of Start list: