Hello, I am a long-time Firefox user. I am writing to express my frustration with a specific change introduced in Firefox for Android 149. First, I want to be clear: the new main menu redesign is a good decision. Moving the core controls to the bottom of the screen, within thumb reach, is the right ergonomic approach, and I appreciate that work. My complaint is specifically about the new tab tray layout. In version 149, the Normal/Private/Synced tab selector has been moved to the top of the screen in direct contradiction with the philosophy behind the rest of the redesign. This makes one-handed use significantly harder, requiring an uncomfortable reach. The previous design kept these controls at the bottom, which was ergonomically correct. I had previously managed to revert this change by removing the 'Android UI Redesign' study under Data Collection settings. Since version 149 has baked the new tab tray in permanently, with the Secret Settings toggles also removed, I am left with no option to restore the previous behavior. I genuinely want to keep using Firefox it remains my browser of choice. However, if no layout option is added in a future update to restore bottom-positioned tab selector controls, I will be forced to switch to an alternative browser. Not out of spite, but simply because the current layout makes daily one-handed browsing genuinely uncomfortable. I hope this feedback reaches the Firefox Android product team. Thank you.