23-year-old Stanford doctoral student repaired 22-year-old BUG of Firefox Firefox browser

Thanks to CTOnews.com netizen Coje_He for the clue delivery! CTOnews.com, Oct. 12 (Xinhua)-- Yifan Zhu, 23, a first-year doctoral student in electrical engineering at Stanford University, has contributed a patch to an open source project for the first time to fix the 22-year-old tooltip bug in Firefox browsers.

CTOnews.com Note: this BUG exists in the toolbar of the Firefox browser. When the mouse hovers over the toolbar icon, the relevant prompt will pop up.

At this point, switch the browser from the foreground to the background, and the mouse prompt will remain in the foreground. The only way to get rid of this annoying hint is to switch the browser from the background to the foreground again, and then move the mouse.

Zhu Yifan, born in 1999, first encountered the Thunderbird when he used the mail client bug on Linux and thought the bug was too annoying. He tried to report the bug, only to find that it had been around for 22 years and had not yet been repaired.

Because the problem is so small that no one has fixed it so far, GitHub decided to fix it himself. He said he just searched the entire code base for tooltip, checked candidates, inserted debug print statements to track execution, and then added a timer to solve the problem. The timer will be cancelled after the mouse is removed.