Hi @Anonymous,
What you're describing was a known issue in AutoCAD 2017 and earlier versions, caused by the certain updates to the Windows 10 operating system. We've released hotfixes for 2016 and 2017, provided workarounds for earlier versions, and the issue should not be occurring in 2018.
- Are you working in Windows 10?
- Do you have all of the available updates installed for both AutoCAD 2018 (the underlying program) and AutoCAD Architecture 2018?
- You can check this by entering ABOUT at the command line and noting the build numbers (post them here if you want us to verify).
You can check for updates in the Autodesk Desktop App on your machine or by logging into your Autodesk Account.
If one or more of these posts helped answer your question, please click Accept as Solution on the posts that helped you so others in the community can find them easily.