Operating system: Windows 10 Version 10.0.17763
Graphics card: NVIDIA GeForce GTX 980 Ti
Broken: Latest 2.81 and 2.7
Short description of error
When "emulate 3 button mouse" is turned on, you are unable to confirm clamped edge slides with left mouse button.
Exact steps for others to reproduce the error
Turn on "emulate 3 button mouse" in preferences.
Create an any object.
Edge slide with ALT held down.
you cannot then confirm with left mouse button