Egor Kleshnin focused on improving user experience and stability in the facebook/fresco repository by addressing a bug affecting avatar animation frame sizing. Using Kotlin and leveraging skills in UI and animation development, Egor identified and fixed incorrect frame size parameters that caused display issues after periods of inactivity. The solution involved isolating the frame size logic, implementing targeted regression tests for inactivity scenarios, and validating the fix across common devices and refresh cycles. This work reduced visual glitches and potential user complaints, demonstrating careful debugging and precise parameter handling while contributing to a smoother onboarding and usage experience for end users.