[Full Changelog](https://github.com/vector-im/riot-web/compare/v0.17.8...v0.17.9-rc.1) * Merge develop into experimental [\#8003](https://github.com/vector-im/riot-web/pull/8003) * Electron: Load app from custom protocol [\#7943](https://github.com/vector-im/riot-web/pull/7943) * Fix the IndexedDB worker [\#7920](https://github.com/vector-im/riot-web/pull/7920) * Make clear that the Debian package is for desktop [\#7919](https://github.com/vector-im/riot-web/pull/7919) * Run the Desktop app in a sandbox [\#7907](https://github.com/vector-im/riot-web/pull/7907) * Update to new electron single instance API [\#7908](https://github.com/vector-im/riot-web/pull/7908) * Update the tests to match https://github.com/matrix-org/matrix-react- sdk/pull/2340 [\#7834](https://github.com/vector-im/riot-web/pull/7834)