Posted by dellus on Feb 28, 2023; 11:48pm
URL: https://forum.librecad.org/Can-t-end-the-Same-Properties-command-tp5722530p5722546.html

After selecting the entities to change, you have to press the Enter Key to close the selection. Then the lines' properties will be changed. But it is not visible, as the selected lines, including the original line, stay highlighted. This can be considered a bug. You have to press Escape to end highlighting.
Just found out by experimenting.
I don't know why your program just shut down, didn't happen to me.