What Are the Different Types of Bugs in Software Testing

Testing software applications requires more than basic operational verification since it involves active problem detection and correction of operational and performance-related and user engagement-related defects. Software contains seven primary categories of bugs which include functional bugs, performance bugs, security bugs, UI/UX bugs, compatibility bugs, integration bugs and concurrency bugs, regression bugs. These are the different types of bugs explained together with their solution methods.

1. Functional Bugs: When Features Don’t Work as Expected

A software malfunctions because operations do not work as intended in the design specifications. The majority of software errors originate from defective software frameworks combined with impaired requirements.

Testing should concentrate on complete test cases along with edge scenarios during an early detection phase

The faulty query in a search function generates incorrect outcome results.

2. Performance Bugs: Slowdowns and Resource Issues

The system displays poor performance through slowness and uncontrolled crashes because it does not function properly.

Typos: Conduct tests at peak capacity to disclose system performance weaknesses

Users experience extended data loading delays while they use the mobile application when traffic reaches its peak.

3. Security Bugs: Vulnerabilities that Threaten Data

The exposure of security bugs creates risks that result in both unauthorized access to data and data breaches of the application.

Security testing together with automated system scans help organizations stop potential security risks before they occur.

Example: A login page vulnerable to SQL injection.

4. UI/UX Bugs: Poor User Experience

The interface's design together with usability suffers because of these bugs which create navigation difficulties for users.

You can prevent this issue by testing user interface usability to verify that it remains simple to use.

When more than one button overlaps with these items users cannot interact with the buttons

5. Compatibility Bugs: Inconsistent Behavior Across Platforms

A program creates these issues because it functions differently among different devices and browsers.

Test the application on major platforms while using realistic user conditions for optimization.

Example: A website displaying images correctly in Chrome but not in Internet Explorer.

6. Integration Bugs: System Components Fail to Communicate

A system type of bug assumes different parts of the program fail to communicate leading to data troubles or malfunctioning features.

Continuous integration testing serves as a tip for maintaining proper system interaction.

Example: Payment gateway failure due to an incorrect API configuration.

7. Concurrency Bugs: Issues with Simultaneous Processes

The occurrence of these bugs becomes possible when different simultaneous processes attempt to use shared system resources. This results in both race conditions and deadlocks.

The identification of these issues becomes easier when using stress testing in combination with parallel execution.

The processing of simultaneous transactions ends in untrusted account balance results.

8. Regression Bugs: Old Problems Reappear

Every time new modifications affect features previously operating correctly this creates a regression bug.

Automated regression tests should be used as a prevention technique to identify these issues early on.

When an updated feature eliminates information that should be preserved in previous functionality.