This is very similar to bug 2012254, but in a slightly different component and with a more-recent regression range. ### Steps to reproduce 1. Ensure that your device is using a "light" theme in System Settings; and in Firefox Nightly's Settings|Customize section, choose to follow the device theme. 2. Set Firefox Nightly as your default browser. 3. Open a private tab in Firefox Nightly (e.g. just tap the mask icon on the Firefox homepage) 4. Launch another app, e.g. Gmail, and tap a link to spawn a custom tab. 5. Tap the 3-dot=menu in the custom tab. ### Expected behavior The system tray at the top of the screen and the nav-bar at the bottom of the screen should match the color of the Firefox custom-tab toolbar (as they do if you skip step 3 of the STR). ### Actual behavior The system tray at the top of the screen and the nav-bar at the bottom of the screen are purple, i.e. private-browsing-themed. ### Device information * Firefox version: 149.0a1 * Android device model: Pixel 6a * Android OS version: 16 ### Any additional information? Regression range: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=7df40d9149a3d5135ccdcf8602299a76bf7f0081&tochange=06d48ece4edf6a0c4499cc65f627bbb5ad9820eb In there, I'm pretty sure this would be from Bug 2006631, which changed the way that we query for the "are we in private browsing" state.
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This is very similar to bug 2012254, but in a slightly different component and with a more-recent regression range. ### Steps to reproduce 1. Ensure that your device is using a "light" theme in System Settings; and in Firefox Nightly's Settings|Customize section, choose to follow the device theme. 2. Set Firefox Nightly as your default browser. 3. Open a private tab in Firefox Nightly (e.g. just tap the mask icon on the Firefox homepage) 4. Launch another app, e.g. Gmail, and tap a link to spawn a custom tab. 5. Tap the 3-dot=menu in the custom tab. ### Expected behavior The system tray at the top of the screen and the nav-bar at the bottom of the screen should match the color of the Firefox custom-tab toolbar (as they do if you skip step 3 of the STR). ### Actual behavior The system tray at the top of the screen and the nav-bar at the bottom of the screen are purple, i.e. private-browsing-themed. ### Device information * Firefox version: 149.0a1 Nightly, 150.0a1 Nightly * Android device model: Pixel 6a * Android OS version: 16 ### Any additional information? Regression range: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=7df40d9149a3d5135ccdcf8602299a76bf7f0081&tochange=06d48ece4edf6a0c4499cc65f627bbb5ad9820eb In there, I'm pretty sure this would be from Bug 2006631, which changed the way that we query for the "are we in private browsing" state.