Repeated elements may retain old event handlers

[RubaXa]

If depending on conditions the element is replaced by another and oldTag.name === newTag.name, then old events saved.

Bug example: http://jsfiddle.net/zrmu855c/1/

[developit]

@RubaXa Confirmed! Great catch, I will have a fix in for this tonight. There is a @todo in the code directly related to this:
https://github.com/developit/preact/blob/master/src/preact.js#L925

Thanks for giving me a simple way to reproduce it!

[developit]

@RubaXa This fix has landed in the 3.0 beta branch. Please test via npm i preact@beta if possible, thanks!

[RubaXa]

👌

[developit]

Thanks for your demo fiddle, that helped immensely. Here's the same code running on preact 3.0 (preact@beta), and it now works as intended:
http://jsfiddle.net/developit/zrmu855c/2/