Hi @kukuts, thanks for your availability for testing the alpha version.
If you're using the JavaScript client (colyseus.js), you can try out the beta versions at:
colyseus@0.14.0-alpha.5 (server)
colyseus.js@0.14.0-alpha.4 (client)
For short, you can install them using:
npm install colyseus@alpha --save
npm install colyseus.js@alpha --save
Hopefully, ALL MapSchema issues should be gone now. There are some small API changes though, mostly regarding iterating through MapSchema values and/or its keys, and getting its length. Here's the upgrading guide so far: https://deploy-preview-45--colyseus-docs.netlify.app/migrating/0.14/