Open Bug 1681284 Opened 3 years ago Updated 3 years ago

Some animations are played inside the Print preview


(Core :: Print Preview, defect, P3)




Tracking Status
firefox84 --- affected
firefox85 --- affected


(Reporter: asoncutean, Unassigned)


(Blocks 1 open bug)


(Whiteboard: [print2020] [old-ui+])


(2 files)

Affected versions

  • 85.0a1 (2020-12-07)
  • 84.0

Affected platforms

  • Windows 10
  • Ubuntu 20.04
  • macOS 10.14

Steps to reproduce

  1. Go to
  2. Hit Ctrl + P
  3. Make sure Print backgrounds option is checked
  4. Scroll down the preview

Expected result

  • Only a thumbnail of the animation is captured inside the preview

Actual result

  • The animation is played inside the preview

Regression range

  • Not a regression, reproducible way back to Fx 78.0a1, on even older builds the animation is not loaded inside the preview

Additional notes

  • Reproducible also with the old UI

Suggested severity

  • S4
Attached file Reduced test-case.

Is there any chance we can try to get a regression range for this?

(In reply to Emilio Cobos Álvarez (:emilio) from comment #1)

Is there any chance we can try to get a regression range for this?

Using your test case I've ended up with the following pushlog, with the "good" build displaying a blank page in print preview.

Severity: -- → S3
Priority: -- → P3
Whiteboard: [print2020_v85] [old-ui+] → [print2020_v86] [old-ui+]
Has STR: --- → yes
Whiteboard: [print2020_v86] [old-ui+] → [print2020_v88] [old-ui+]
Whiteboard: [print2020_v88] [old-ui+] → [print2020] [old-ui+]
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