I had the same problem when Chrome automatically changed the Bookmark facility to one that was almost universally disliked according to various forums.
In Chrome, open a new tab then in the address bar, enter -
chrome://flags/#enhanced-bookmarks-experiment
This will take you to a long list with "Enable Enhanced Bookmarks" highlighted in yellow. In the drop-down options just underneath the highlighted text, select "Disabled".
You should see a "Relaunch Now" box appear bottom left - click that. On restarting, the bookmarks star should be back in place.
Be careful not to alter any of the other settings in that list.
HTH