Dear All,

I've just received Stata 17 and noticed the following inconsistent indication in the do-editor:

Array

The title bar indicates (with a star) that the file has been modified, yet there is no undo capability.

The file content is irrelevant, I've observed that with various files. The issue occurs in roughly this scenario:
- open an earlier saved do-file;
- do modifications to the code and run, several times;
- undo changes by pressing the undo-arrow button.

Expected - all changes are rolled back and the file status indicates "as saved - not modified".

Additional information:
- File is small, less than 10 lines of code.
- Changes are small - tweaking some parameters.
- Number of changes is small.

I can't reproduce the issue consistently, but I have already encountered it several times. I am pretty sure I am doing everything same as I was doing in Stata 16.

In relation to this, what are the limits of the UNDO-capability of Stata? How many changes? or how many lines in the buffer? Or perhaps time-bounds? Any details would help.

Thank you, Sergiy