Like another user described, I am experiencing a bug with Google Chrome's context menus disappearing. That question was here: How to fix disappearing Context Menus in Chrome
After upgrading Chrome as suggested by Remirol, the error persists.
When the context menu disappears, the outline remains but only barely. On mouseover of the menu's selections the various selections will reappear individually.
See the attached screenshot images:
Initial outline, can you see it?
Mouseover some but not all...