1618783 - Context menu mostly blank in window opened by -private-window command line option

Status: UNCONFIRMED

(Firefox :: Private Browsing, defect, P3)

Description

[cbouchon+bff]

Attachment: Blank context menu (big ? was added)

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:73.0) Gecko/20100101 Firefox/73.0

Steps to reproduce:

Right-click inside any tab (that doesn't disable context menu) in a private navigation window opened with command-line option -private-window. Menu actions are OK but have to blindly guess what line to clic!
Tried again after disabling all my extensions, same result. Tried both at home and office computers (both Windows 10 Pro v.1909, both Firefox 73). Bug didn't exist in older Firefox versions (not sure for v72).

Actual results:

Most of the context menu was blank (no visible text) except for top-line icons and extensions-provided options. However, sub-menu items of an blank item are visible.

Opening a private browsing window with the "mask" button or Ctrl-Shift+P doesn't produce the bug (context menu is displayed properly).

Expected results:

A readable context menu.

Comment 1

[BugBot [:suhaib / :marco]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 2

[Johann Hofmann [:johannh]]

Could you try and find a regression range using https://mozilla.github.io/mozregression/?

Thanks!

Comment 3

[BugBot [:suhaib / :marco]]

Clear a needinfo that is pending on an inactive user.

Inactive users most likely will not respond; if the missing information is essential and cannot be collected another way, the bug maybe should be closed as INCOMPLETE.

For more information, please visit auto_nag documentation.