Rulers are set to show in View, but are not visible

[Troy22932790qu23]

This just began and it's very frustrating. I go under View, Rulers, and it is checked. But as you can see from the attached photo, the rulers are not actually visible, so I can't use them to create guides. The cyan lines already in place were created before the rulers vanished. And the rulers vanished after two program crashes this evening. What's going on?

[Ged_Traynor]

@Troy22932790qu23 this issue appears to affect some people

https://community.adobe.com/t5/photoshop-ecosystem-bugs/photoshop-update-today/idi-p/13605427