Your signature says AC 19... is that the version you're having problems with?
Have you tried a fresh file-from-template to see if it is something to do with your file vs the system? The 10.13.6 update should not have made any difference.
AC 28 USA and earlier • macOS Sequoia 15.3, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB
One of the forum moderators