We are working on this issue with Apple and when a full solution becomes available we will update Script Debugger. In the meantime, please follow the workaround suggestions in the article linked above.
Changes for build 7A100
1354: Addressed a hang that can occur when folding a block comment.
1365: Corrected a regression that caused dictionary search facility in the script window’s Inspector tab to fail when a script references libraries.
1363: Worked around regression in Catalina that resulted in save dialogs changing the default file name to Untitled in all cases.
I opened an Applet that I’ve been using for months, and noticed a code folding issue.
First, due to previous issues I had View Code Folding off on this system. But in the script for this applet one of the handlers was folded when I opened it. It had the ellipsis (…) symbol, but no triangles. I turned on View Code Folding, and the triangles appeared with this handler still folded (all the other elements were unfolded). Clicking on the triangle for the folded handler did nothing. Code folding worked properly for all other foldable elements.
If I select “Unfold All” from the menu, the handler unfolds. If I fold it again using the triangle, clicking the triangle has no effect.
If I recompile with that handler folded it still won’t unfold with the triangle. Same thing if I recompile with that handler unfolded.
–> Script Debugger 7.0.11 (7A101)
–> Mac OS 10.11.6 (15G31)