[Bug] Min/Max/Close Buttons disappear on hover with noThemedIcons

[ayykamp]

Describe the bug

Video to demonstrate:

Screencast.From.2025-08-11.02-08-02.mp4

Steps to reproduce

1. Hover over close window button
2. See it disappear

Expected behavior

Like without noThemedIcons

Operating System

Fedora

Firefox installation method

Distro package

Firefox version

141

Theme version

141

Optional features enabled

• gnomeTheme.hideSingleTab
• gnomeTheme.normalWidthTabs
• gnomeTheme.swapTabClose
• gnomeTheme.bookmarksToolbarUnderTabs
• gnomeTheme.activeTabContrast
• gnomeTheme.closeOnlySelectedTabs
• gnomeTheme.systemIcons
• gnomeTheme.noThemedIcons
• gnomeTheme.symbolicTabIcons
• gnomeTheme.hideWebrtcIndicator
• gnomeTheme.hideUnifiedExtensions
• gnomeTheme.dragWindowHeaderbarButtons
• gnomeTheme.tabsAsHeaderbar
• gnomeTheme.oledBlack
• gnomeTheme.allTabsButtonOnOverflow
• gnomeTheme.allTabsButton
• gnomeTheme.tabAlignLeft
• gnomeTheme.bookmarksOnFullscreen

Additional information

No response