Perhaps the chevron (>>) you're seeing is because you have more extensions installed than I do and some of your extensions have been moved to the add-on overflow menu. See the AddictiveTips article How to Hide Firefox Add-ons in the Overflow Menu.
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Dell Insipron 5584 * 64-bit Win 10 Pro v22H2 build 19045.2486 * Firefox v109.0.0 * Microsoft Defender v4.18.2211.5-1.1.19900.2 * Malwarebytes Premium v4.5.20.230-1.0.1868 * Macrium Reflect Free v8.0.7279
Does anyone know if the new Unified Extensions (jigsaw puzzle) icon in the toolbar of Firefox 109 is optimized for newer Manifest V3 extensions? When I click that new icon it doesn't open the Extensions panel described in the Mozilla support article Manage Your Extensions Using the Extensions Button in the Toolbar, and the "Common Questions" section of that support article says that "If your extension is already pinned to the toolbar, it will not appear in the extensions panel". Every Firefox extension I currently use was automatically pinned to the toolbar during installation to give me quick access to the extension settings.
At the moment, clicking that Unified Extensions button doesn't do anything except open my Add-on Manager (Tools | Add-ons and Themes, or about:addons) and lands me on the Recommendations tab to show me a curated list of extensions from their Recommended Extensions program.