Donny Liu’s Favorite Bug

Our team uses a web-based tool to test our product. In one page, we can input tree-like structured data. In some conditions, we have to create a child under one node of that tree by clicking a drop-down list to select the type of the child object. The amazing thing is, we have to click…


Sherry Chupka’s Favorite Bug

In one application there is a small line of whitespace between a custom toolbar and the menu; clicking this whitespace causes an unhandled exception due to a null pointer. I found this by accident just trying to access certain options. This is my favorite because I like finding unexpected bugs.  — Sherry Chupka   Do…


The Bug Craig Will Never Forget

Of all the bugs I’ve came across I’ll never forget this one because it was so severe and easy to miss. Later, when I was a Test Lead it was the first thing I added to my sign-off checklist… A few years ago, our product was practically out the door when we learned that setup…


The Bug That Makes Craig Laugh Every Time

When my first test manager left Microsoft he told the team this was his favorite bug and it is easy to see why (testers are often asked about their favorite bugs when they leave). On his first week on the job one of my friends hit a crash in the speech recognition engine. He had…


Tom Whalen’s Favorite Bug

The most interesting recent bug was a Vista upgrade error that was initially assigned to my component. We had a couple of Watson reports where the symptom was there would be an error logged during upgrade which caused a fatal error and a roll-back. Unfortunately there was no more information present and none of the…


Anutthara’s Favorite Bug

There was this bug that I remember even 4 years later now. Since we expect our users to install our product on operating systems of different languages, we do globalization testing on this. So for the Beta release, I installed our product on a Japanese (JPN) Windows 2003 (W2K3) box and tested that the basic…

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Bruce Shankle’s Favorite Bug

During Windows 95, I was a beta tester. It was the first time I’d seen a ‘Recycle’ bin on a Microsoft platform. (We had some undelete functionality in DOS that required you to know the first letter of the file you wanted to undelete on the FAT file system. Sometimes it worked pretty well, but…


Vamshidar Rawal’s Other Favorite Bug

Problem: Release To Web (RTW) for Office Online site and we were seeing features breaking randomly with no reason at all. A lot of debugging led to no indication of what the problem was.  Cause: Testing features before RTW, testers did not catch the issue and also our test environments had not really mimicked the…


One Of Vamshidar Rawal’s Favorite Bugs

Problem: We had instrumented our code to spit out timing markers at various points of pages that were tracked via automation and measured actual end-user download times 24/7 on the production site. The results showed that 25% of the time the download times were in the excess of 20 Seconds and it did not matter…


Jurgen Appelo’s Favorite Bug

My favorite bugs are the errors that generate themselves recursively. I have two examples: The first involved an error logging mechanism that logged each exception in a database. At some point our database started throwing exceptions because the disk on the database server was nearly full. These exceptions caused more logging to occur, which lead…