I have received the update for Edge Beta Version 79.0.309.12 (Official build) beta (64-bit).
I have noticed an issue with the settings for extensions.
When we click on settings under : Settings > Extensions > Details (for extension) > Extension options.
Some of the extensions use little popup window to show settings and I have noticed this issue on few extensions.
See the picture attached for example.
1. The window is too small, we get scroll bar to scroll horizontal and vertical.
2. Also the main window gets scrollbar as well.
3. Close button is also not aligned properly.
If extension is having its dedicated web page for settings, there are no such issues.