Adobe Reader DC bug when "Save toner" is selected

[#1]

This is about Adobe Reader DC run from WIndows computer.

A pdf is on the user desktop, and user open it with his Adobe Reader DC

In the File Print dialog, there is as "Save Toner" checkbox.

When it is selected, the pdf document events  WillSave and DidSave are triggered

This never happens when it is not selected

Moreover, it seems that this causes some reloading because the global var are reset to the original values.

Steps to reproduce the problem

Add a javascript document with the code

var testvar = 0;

Add a print button with the code

testvar = 1;

console.println("in print button: "+testvar.toString());

this.print(true); //show the ui print dialog

console.println("out print button: "+testvar.toString());

Add a WillSave event with the code

console.println("unexpected call to will save: "+testvar.toString())

Add a DidSave event with the code

console.println("unexpected call to did save: "+testvar.toString())

Add a WIllPrint event with the code

console.println("in will print: "+testvar.toString())

Add a DidPrint event with the code

console.println("in did print: "+testvar.toString())

Save the form on your desktop close and open the form from the Reader X program

Click on the button on the form and do not select "Save Toner"

The console will show, as expected

in printbutton 1

in will print: 1

in did print: 1

out printbutton 1

Now click on the button on the form and select "Save Toner"

The console will show

in printbutton 1

unexpected call to will save: 1

unexpected call to did save: 1

in will print: 0

in did print: 0

out printbutton 0

[#2]

This is about Adobe Reader DC run from WIndows computer.

A pdf is on the user desktop, and user open it with his Adobe Reader DC

In the File Print dialog, there is as "Save Toner" checkbox.

When it is selected, the pdf document events  WillSave and DidSave are triggered

This never happens when it is not selected

Moreover, it seems that this causes some reloading because the global var are reset to the original values.

Steps to reproduce the problem

Add a javascript document with the code

var testvar = 0;

Add a print button with the code

testvar = 1;

console.println("in print button: "+testvar.toString());

this.print(true); //show the ui print dialog

console.println("out print button: "+testvar.toString());

Add a WillSave event with the code

console.println("unexpected call to will save: "+testvar.toString())

Add a DidSave event with the code

console.println("unexpected call to did save: "+testvar.toString())

Add a WIllPrint event with the code

console.println("in will print: "+testvar.toString())

Add a DidPrint event with the code

console.println("in did print: "+testvar.toString())

Save the form on your desktop close and open the form from the Reader X program

Click on the button on the form and do not select "Save Toner"

The console will show, as expected

in printbutton 1

in will print: 1

in did print: 1

out printbutton 1

Now click on the button on the form and select "Save Toner"

The console will show

in printbutton 1

unexpected call to will save: 1

unexpected call to did save: 1

in will print: 0

in did print: 0

out printbutton 0

[#3]

I doubt it's a bug. Probably as intended, but undesirable. My wild guess is that to save toner Acrobat makes a new document, which prints with less toner, and saves it.  So you have a freshly saved and opened version of the file. Your script has to deal with this somehow.