I use the forward/back arrows all the time by keeping the “Navigation Controls” on upper toolbar checked. However sometime in the past week they have disappeared and do not reappear even after 1) unchecking/checking them 2) quitting the application and restarting.
This is on latest MacOS Tahoe 26.2 (25C56).
Steps to Reproduce
Start up cursor, right click upper toolbar and select Navigation Controls
However, that Agents/Editor thing was not appearing on my other windows. example with a dev window open in my projects directory with the ttemp window over it: