Issue with edge browser
TestComplete version 15.75 is supported, but we are experiencing flickering issues and dropdown selection problems in our application when using Edge version 140.3.
Forum Discussion
I also have an issue with the latest Chrome/Edge version.
version 139 does work I recommend downgrading edge to that version.
I also made a Community ticket for this:
Don't update Chome to v140 | SmartBear Community
Edge would be the same.
EDIT: you could check if TC 15.77.6 does work for you before downgrading