Yesterday I’ve started migration to 2.3 and point on my list is migration to new MCP23017 binding (https://www.openhab.org/addons/bindings/mcp23017/) . I’ve changed my old configuration and now I perform testing.
I have to say that this binding works very unstable. Main problem what I have now is that after restart some (random) inputs does not work (or work with huge delay).
Did you notice such problem?