Bugzilla

**Affected versions**
- Firefox 84.0a1

**Affected platforms**
- macOS 11

**Steps to reproduce**
1. Launch Firefox
2. Access this [test page](https://upload.wikimedia.org/wikipedia/commons/4/47/PNG_transparency_demonstration_1.png)
3. Print the page

**Expected result**
- The page is printed successfully with color

**Actual result**
- Around 10% of the page is printed then the printer stalls for 5 minutes then cancels the printing

**Regression range**
- I will see for a regression if there is one

**Additional notes**
- The issues can be seen in the attachments.
- The printing is done via Wireless
- Chrome prints the page ok, but it seems different than the preview from Firefox
- Firefox will print the PNG example, but only if black and white is selected
- This may be some driver incompatibility issue
- Ubuntu 20.04 is not affected and will print the page ok

**Suggested severity**
- S2

**Affected versions**
- Firefox 84.0a1

**Affected platforms**
- macOS 11

**Steps to reproduce**
1. Launch Firefox
2. Access this [test page](https://upload.wikimedia.org/wikipedia/commons/4/47/PNG_transparency_demonstration_1.png)
3. Print the page

**Expected result**
- The page is printed successfully with color

**Actual result**
- Around 10% of the page is printed then the printer stalls for 5 minutes then cancels the printing

**Regression range**
- I will see for a regression if there is one

**Additional notes**
- The issues can be seen in the attachments.
- The printing is done via Wireless
- Chrome prints the page ok, but it seems different than the preview from Firefox
- Firefox will print the PNG example, but only if black and white is selected
- Other examples as [SVG](http://upload.wikimedia.org/wikipedia/en/c/ce/SVG-logo.svg) will print ok
- This may be some driver incompatibility issue
- Ubuntu 20.04 is not affected and will print the page ok

**Suggested severity**
- S2