Hi,
When I create a new property or class in EDG, the dialog pops up and I fill in the fields. If the default for the ID is not what I need, I click and drag the mouse across the field to select all of it as shown below. If I release the mouse button when the mouse is on the pop-up, everything is fine. If I release the button when the mouse is not on the pop-up, the pop-up closes with no warning.
I'm using EDG/TBC 6.3.1
Windows 10
Chrome Version 81.0.4044.122 (Official Build) (64-bit)
The workaround is to be careful where your mouse is :)
Tim