Bugzilla

**Suggested Severity**
* S4

**Affected versions**
* 85.0a1 (2020-11-26)
* 84.0b4

**Affected platforms**
* Windows 10x64

**Preconditions**
* Perform a print via the “Save to PDF” destination in order to have the “Save to PDF” as the default set destination next time you use the print UI.
* Have an installed network printer.
* Have a printer configured via CUPS server.

**Steps to reproduce**
1. Launch Firefox.
2. Access the following (webpage)[https://www.mozilla.org/en-US/MPL/2.0/].
3. Hit CTRL + P.
4. Change the destination from “Save to PDF” to your actual printer.
5. Set a custom range (ex: from 2 to 3)
6. Change the destination back to “Save to PDF”
7. Print the file.


**Expected result**
* The file is successfully printed.

**Actual result**
* After clicking the “Save” button from the “Save As” prompt, the old system dialog gets open. I’ve noted that before the system dialog gets open, an empty pdf file is generated and If you try to print with the newly open system dialog it will give you an error with the following error message being outputted inside the browser console: Uncaught (in promise) undefined.

**Regression range**
* I was unable to check for a regression because mozregression keeps closing my build but I suspect the same regressor from 1663445 - Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=44801b6e7c7a2d333c287b926a7118356c396a2d&tochange=2e2abe718eb21d36932b373f587d11819d0a3674

**Additional notes**
* It is worth mentioning that I do not have access to the CUPS configured printer

**Suggested Severity**
* S4

**Affected versions**
* 85.0a1 (2020-11-26)
* 84.0b4

**Affected platforms**
* Windows 10x64

**Preconditions**
* Perform a print via the “Save to PDF” destination in order to have the “Save to PDF” as the default set destination next time you use the print UI.
* Have a printer configured via CUPS server.

**Steps to reproduce**
1. Launch Firefox.
2. Access the following (webpage)[https://www.mozilla.org/en-US/MPL/2.0/].
3. Hit CTRL + P.
4. Change the destination from “Save to PDF” to your actual printer.
5. Set a custom range (ex: from 2 to 3)
6. Change the destination back to “Save to PDF”
7. Print the file.


**Expected result**
* The file is successfully printed.

**Actual result**
* After clicking the “Save” button from the “Save As” prompt, the old system dialog gets open. I’ve noted that before the system dialog gets open, an empty pdf file is generated and If you try to print with the newly open system dialog it will give you an error with the following error message being outputted inside the browser console: Uncaught (in promise) undefined.

**Regression range**
* I was unable to check for a regression because mozregression keeps closing my build but I suspect the same regressor from 1663445 - Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=44801b6e7c7a2d333c287b926a7118356c396a2d&tochange=2e2abe718eb21d36932b373f587d11819d0a3674

**Additional notes**
* It is worth mentioning that I do not have access to the CUPS configured printer

**Suggested Severity**
* S4

**Affected versions**
* 85.0a1 (2020-11-26)
* 84.0b4

**Affected platforms**
* Windows 10x64

**Preconditions**
* Perform a print via the “Save to PDF” destination in order to have the “Save to PDF” as the default set destination next time you use the print UI.
* Have a printer configured via CUPS server.

**Steps to reproduce**
1. Launch Firefox.
2. Access the following [webpage](https://www.mozilla.org/en-US/MPL/2.0/).
3. Hit CTRL + P.
4. Change the destination from “Save to PDF” to your actual printer.
5. Set a custom range (ex: from 2 to 3)
6. Change the destination back to “Save to PDF”
7. Print the file.


**Expected result**
* The file is successfully printed.

**Actual result**
* After clicking the “Save” button from the “Save As” prompt, the old system dialog gets open. I’ve noted that before the system dialog gets open, an empty pdf file is generated and If you try to print with the newly open system dialog it will give you an error with the following error message being outputted inside the browser console: Uncaught (in promise) undefined.

**Regression range**
* I was unable to check for a regression because mozregression keeps closing my build but I suspect the same regressor from 1663445 - Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=44801b6e7c7a2d333c287b926a7118356c396a2d&tochange=2e2abe718eb21d36932b373f587d11819d0a3674

**Additional notes**
* It is worth mentioning that I do not have access to the CUPS configured printer