+1
A Mac OS X 10.11.x iMac, AC 19:
Copy - paste across AC 19 programs fails a lot of times, but then again, they do not fail every time with every instance of the program.
Only one machine out of many is affected with this problem. It is a little bit strange, because I can't find a lot of significant differences between the workstations: iMac 27", OSX 10.11, AC 19.
Difficult to troubleshoot, I guess.
AC25, Rhino6/7+Grasshopper, TwinMotion • Mac Pro 6,1 E5-1650v2-3,5GHz/128GB/eGPU:6800XT/11.6.5 • HP Z4/Xeon W-2195/256GB/RX6800XT/W10ProWS