Open Bug 1592195 Opened 2 years ago Updated 10 months ago

Back button only removes video


(Core :: DOM: Navigation, defect, P3)

70 Branch




(Reporter: xracoonx, Unassigned)




(Keywords: regression, reproducible)

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:70.0) Gecko/20100101 Firefox/70.0

Steps to reproduce:

  1. Go to
  2. Click on a video on the top, e.g. "100 Sekunden" to open the video page
  3. When the page is open press the back button

Actual results:

Firefox creates an additional history item for the page and the back button only shows the video page with the video removed

Expected results:

Does not create additional history item and moves back to

(Works in Safari, Chrome, and used to in Firefox.)

I can reproduce the issue on Nightly72.0a1 Windows10.
However, It is necessary to execute step 2 & 3 twice.

Component: Untriaged → Document Navigation
Ever confirmed: true
Keywords: reproducible
OS: Unspecified → All
Product: Firefox → Core

I thought this might be related to async history.* API changes, but the pref didn't affect to this.

Has Regression Range: --- → no
Has STR: --- → yes
Priority: -- → P3
Has Regression Range: no → yes

I confirmed the regression range of comment #3.
maybe the culprit is Bug 1270059 and Bug 1522150.

Regressed by: 1270059
You need to log in before you can comment on or make changes to this bug.