2058096 - [Nova] [linux] Device name and History time have a hover effect

Status: NEW

(Firefox :: Sidebar, defect, P3)

Description

[Alexandru Trif, Desktop Test Engineering [:atrif]]

Attachment: image.png

Found in

• 155.0a1 (2026-07-26)

Affected versions

• 155.0a1 (2026-07-26)

Tested platforms

• Affected platforms: Ubuntu 26
• Unaffected platforms: Windows 11, macOS 14 aarch

Preconditions

• ensure Nova is enabled
• ensure that sidebar is enabled
• ensure that user is signed in to sync

Steps to reproduce

1. Open Sidebar > Tabs from other devices or the History panel.
2. Observe the Time or the device names.

Expected result

• There is no hover effect on the Device name or the time as in Figma

Actual result

• There is a hover effect on the Device names from sync and the time from the history panel.

Regression range

• N/A.

Additional notes

• Attached a screenshot.
• Not reproducible without nova

Comment 1

[BugBot [:suhaib / :marco]]

The severity field is not set for this bug.
:sfoster, could you have a look please?

For more information, please visit BugBot documentation.

Comment 2

[Sam Foster [:sfoster] (he/him)]

This is behaviour we pick up from moz-card. I guess this is a -moz-native-theme thing. The variable giving us that hover color resolves to --button-background-color-hover which gets different values for nova etc.