Release date: 20 April 2021
In the v2020.10.7 release, an issue affecting the compatibility between UiAutomation activities v2018.4 and v2020.10 Robots has been fixed.
Workflows created with v2018.4 UiAutomation activities using selectors were failing when run with v2020.10 Robots on Internet Explorer. The resolution is to either upgrade UiAutomation Activities pack to v2020.10.9 or upgrade the Robots to v2020.10.7.
Updated about a month ago