This article discusses the most common UI bugs encountered in web applications and provides strategies for effectively monitoring them. These bugs can significantly affect user experience and functionality, leading to a fragmented user experience. The article highlights 14 common UI bugs such as cross-browser incompatibility, responsive design bugs, form validation bugs, color inconsistencies, alignment issues, broken links and navigation, invisible clickable areas, inconsistent fonts and typography, slow loading times, bad iconography, cluttered pop-ups, messy layout, inconsistent scrolling, and complex navigation. It also provides tips on how to avoid these bugs during testing.