I am new in archicad, currently creating my first educational project and i faced a problem. After working some time on my project my shortcuts got disabled.. for example the CTRL+U (Multiply) command, however if i double click on a object point and the context menu pops up i can choose it from there. The CTRL+A, CTRL+C, CTRL+V commands still work... Creating new document fixes the issue so i believe it is something i toggled in my current project. Can you help me?