[Rollback Notice] RATATAN Demo v0.3.90 → v0.3.87

[p]\[Rollback Notice] RATATAN Demo v0.3.90 → v0.3.87[/p][p]We have reverted the demo to v0.3.87 after discovering that the Hotfix build v0.3.90 released earlier today contained a bug preventing the tutorial from starting.[/p][p]A corrected Hotfix (v0.3.90 revised) is in preparation and will be deployed in the coming days.[/p][p]We apologize for any inconvenience this may cause.[/p]