Experimental: Sliding Sync Issues

[Just-Insane]

This issue has a non-exhaustive list of known issues with sliding sync, and is linked to from the Use Sliding Sync (Experimental) in app.

Known Incompatibilities

These are known issues with sliding sync implementation in matrix-js-sdk

• Does not work with element-call/sable-call calls

Bugs in app

These are known to be bugs within Sable related to enabling sliding sync

• Activating sliding sync option results in blinking sidebar #185 - non-synapse servers seem to have... issues.