I have the same issue. One file will be open. If I open another file, the will have the correct header file name in the tab, but both tabs will have the first file's contents in it. The second file has to be closed and reopened to display the correct contents.
I have the same issue. One file will be open. If I open another file, the will have the correct header file name in the tab, but both tabs will have the first file's contents in it. The second file has to be closed and reopened to display the correct contents.
CC 2019
Illustrator 23.03
MAC OS 10.14.4