That is correct.
You won't get snap points while offsetting a polygon edge or using the offset tool.
The trick is to activate the snap point first and then use then offset.
But you will need to turn of "Auto hide snap points" in the Work Environment.
Otherwise you have to work very fast before the snap points disappear.
The snap points will disappear once you complete your command.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10