Last week, many of us who are Windows 10 users would have received a software update message informing of a major update that would take a long time. Indeed, this was the Windows 10 Fall Creators Update and a major one that took more than an hour to finish.
I installed this update and realized the free bug that cam along with it: this update causes an un-desirable effect when you drag and move a toolbar (see above, it leaves a trail of debris on the screen, which thankfully, goes away as quickly as it came, but nevertheless an irritating behavior.
Thank you, Owen Wengerd, for pointing out the reason for this behavior. If you happen to be affected by this bug, please submit your feedback to Microsoft at this Feedback Hub URL below:
The technical reason for this is that this Windows 10 1709 update breaks the MFC CControlBar drag (causing a mess on screen)!!
This affects not just BricsCAD, but also AutoCAD and a host of other software that use the above MFC control.