Care to elaborate?
Ofc, that's just 1 aspect of the engine. There are numerous bugs in the IDE for 2d, which I have encountered. Also, the asynchronous event system quickly becomes cumbersome as a project grows. Ordering becomes important, for which there is no amount of control in Godot (dealing with mouse events, for example). This leaves every developer to implement a stateful dashboard, of sorts, to ensure events are handled in the correct order. This then leads to nondeterministic delays, etc.