In v2019 (as well as in v2018), shift-copying an object/text/line etc sometimes goes wrong (Win10);
- select an object - for instance a line
- press cntr, press shift, move the object
- many times there’s no problem - the object is copied to its new position
- sometimes, LayOut goes into a loop where the copied object jumps between the old and the new position many times. Esc doesn’t stop it. Switching to another window sometimes does.