New symptom of GCA functionality loss in VS Code:
When changes are accepted, they are written to a temp file, but never make it into the target file.
As a workaround, I copy the contents of the temp file, and paste them into my working context file.
This is NOT caused by large files or large sets of changes. For example, in this case, there are just 3 changes in the diff, and the working context file is just 45 lines long.
Here is a screenshot:
