Daneil and Norbert
Thank you for finding the solution to this problem. I just could not understand how running AC in a different user profile could not reproduce the same problem I was being affected by in my default user profile. I am running AC 10. I had issues drawing a line using the Shift key as well. I found I could run AC in a different user without any issue. I have been looking for a User preference which was messed up. I did not realize it all had to do with Quicken Scheduler.
Now that I have shut off the Quicken Scheduler, I can now draw a line locked to my settings such as 0, 30, 60, 90 and such and trust they will be dead on.
It would really be helpful for GS to acknowledge this conflict so Users can make the necessary adjustment.
Cheers
Terrence Sturm, Architect
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MBP OSX 10.15.4 Quad Core Intel i7 2.2hz
AC 17 build 5019
AC 22 build 7000
AC 23 build
AC 24 build 5000