Home Guide 5 Common Bugs Faced in UI Testing

5 Common Bugs Faced in UI Testing

By Jash Unadkat, Technical Content Writer at BrowserStack -

Software Testing is a vital stage in the software development life cycle. QA engineers encounter many critical bugs while testing a variety of web-applications. However, some bugs tend to appear more frequently than others. This article aims to point out some of these bugs. Knowing them will help the QA community ensure that they do not miss out on detecting and resolving them while performing their next test.

#1 – Cross Browser Adaptability Bugs

If a web-app is not tested for cross browser compatibility, then it may lead to bad user experience and eventually result in loss of revenue. Hence, QAs must take care to perform browser compatibility testing for their web-applications using test automation frameworks like Selenium. This helps in ensuring that their web-apps are easily accessible by users across multiple browsers. It also ensures that users who might be using older browser versions can use a web-app with no issues.


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#2 – Form Validation Bugs

These types of bugs are often overlooked as they are considered a low priority. In this case, a form might misbehave or throw errors if invalid characters are entered in the validation fields. Surpassing the maximum length of an input field also leads to errors.

To avoid a malfunction, developers must follow certain practices while setting up the validation logic. Best practices include:

  1. Limiting the number of characters for specific fields like Zip Code, ID, Telephone numbers. For example, the maximum length of the Zipcode field can be restricted to 6 digits. Care must also be taken to ensure that certain countries (like the UK) have alpha-numeric Zip codes, which should be permitted
  2. Defining the maximum length of the alpha-numerical password a user can set. Pre-define if special characters are supported. For example, for users to set strong passwords, the password policy can be as follows:
  • The password should be alpha-numerical
  • The password must contain a minimum of 6 characters and a maximum of 15 characters.
  • Password must contain a special character like @, ! or ().

Following the practices above, developers can ensure that critical bugs are avoided and provide enhanced data integrity.

#3 – Usability Bugs

If the developed web-application is not user-friendly, it might be annoying for end-users. If users are not able to easily access the critical functionalities of the application, it translates to a bad user experience. All key functionalities or features must be available upfront on the home page or main menu.

Easy navigation helps users understand all key features of the application and also enhances user experience. Developers should design in a way that facilitates an easy understanding of the app architecture for the user. This can be done by providing quick tutorials when a user explores the app for the first time or by providing a Help section.

#4 – Inconsistencies in the Page Layout across Devices

Web-applications tend to suffer from rendering inconsistencies when accessed through devices with different screen sizes. Such bugs might lead to the loss of potential customers and revenue, especially in the case of e-commerce sites or apps. Hence developers must conduct or access some research on the mobile-browser combinations used by the target audience. Then accordingly, they can focus on testing as well as optimizing for those mobile devices and browsers.

This ensures that the web-app is responsive across multiple devices like tablets, smartphones, desktops, etc. Teams can use tools like a Responsive checker to ensure all that their page layouts are consistent and flawless across devices.

#5 – Broken UI Elements leading to Misbehaviour

Some dysfunctional UI elements like buttons or text fields might remain uncovered during initial testing. However, these bugs are very critical, and if not eliminated in the early stages, can damage the web app’s functionality. Such bugs might end up crashing an entire mobile or web-application. For example, an ‘Update Profile’ button in the profile settings may not be functional and repeated clicks might crash the app.

It is crucial for teams to verify that every component of a site is thoroughly tested before launching it. The list of bugs detailed above can offer QAs some awareness on what bugs to look out for so that they can identify and debug with ease and speed. This streamlines the testing process, resulting in better management of time, effort and resources in the overall development span.

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