In the future, please post different issues in different threads.
If you zoom way in, you should see that the lines are drawn in the DashDot linetype.
If, in Document Properties, you go to the Linetypes tab, you will see that the pattern, in inches, is set to “0.1969, 0.0787, 0.0000, 0.0787” and that explains why you don’t notice this pattern when a line is several feet long.
You can create a new linetype and set the pattern as you want.
I didn’t notice any difference when I deleted all other layers here. What are the exact steps to reproduce this?
“Are you sure you want to delete style Helvetica Regular?”
" There are 49 annotation objects that use the “Helvetica Regular” annotation style.
If you delete this annotation style, all annotation objects that use this style will be deleted.
Do you want to delete this annotation style and all objects that use it?"