Since 2.3.0.beta9, the editor sometimes loses the capability to write some accented characters, which becomes very annoying. Pasting accented texts work, which provides a temporary workaround.
When first loaded, the editor works fine, but at some point (which remains unclear) he cursor disappears and the accented characters cannot be inserted anymore from the keyboard. The bug appears in Firefox with composite character maps (e.g., the Spanish map where an accented character can be inserted by typing the diacritic then the letter).
The console does not throw an error. There’s a deprecation warning on “removing all listeners” which may or may not be related.