TableView with many columns poor ui performance

[Jeanette Winzenburg]

Zitat von Danny Gonzalez <danny.gonzalez at screamingfrog.co.uk>:

> Hi Ed,
>
> I have submitted a pull request and the branch is here:
> https://github.com/screamingfrog/jfx/tree/listeners_optimisation
>
>

hmm .. the change seems to be breaking spec of add/remove listeners

"If the same listener is added more than once, then it will be  
notified more than once".

or what am I missing?