Actually, the best way to track bugs and see if people can replicate the behavior is in LaunchPad, since it's a bug **tracker** were several people can suscribe themself to it. So no, bugs or suspecting bugs are off-topic in AskUbuntu. What is a bug?

> A software bug is an error or fault in a computer program which makes it fail to work as it's supposed to. This could be as simple as failing to work at all, or as complicated as a subtly incorrect result. Nevertheless, we really want to eliminate software bugs, as they make programs less useful.
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> Some things aren't bugs, but are missing features that should be reasonably included. Missing features shouldn't be reported as bugs, instead FeatureSpecifications should be written for them. There isn't a bright line that you can draw between bugs and missing features, but here's a guideline: **if it's a problem that would have many details to address, it's likely to be a feature**. For example, the inability to write files safely to a modern OS X partition is a missing feature. The inability to write files safely to a ReiserFS partition would be a bug.
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> A software bug is an error, flaw, failure, or fault in a computer program or system that produces an incorrect or unexpected result, or causes it to behave in unintended ways. Most bugs arise from mistakes and errors made by people in either a program's source code or its design, or in frameworks and operating systems used by such programs, and a few are caused by compilers producing incorrect code. A program that contains a large number of bugs, and/or bugs that seriously interfere with its functionality, is said to be buggy. Reports detailing bugs in a program are commonly known as bug reports, defect reports, fault reports, problem reports, trouble reports, change requests, and so forth.
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> Bugs trigger errors that can in turn have a wide variety of ripple effects, with varying levels of inconvenience to the user of the program. Some bugs have only a subtle effect on the program's functionality, and may thus lie undetected for a long time. More serious bugs may cause the program to crash or freeze. Others qualify as security bugs and might for example enable a malicious user to bypass access controls in order to obtain unauthorized privileges.

**TL;dr:** Bugs are errors that are always reproducible under certain circumstances and behaviors unexpected of the piece of software.