CssLayout / LayoutClickListener doesn't work with Selenium in 7.2.4

We have some problem with CssLayout / LayoutClickListener + Selenium in the new version of Vaadin (7.2.4). We have a treetable and we use jQuery dbclick / click from the selenium tests to collapse the given node in the table. It works with version 7.1.11 fine but doesn’t work with 7.2.4 (also tried with 7.2.2 - same problem). It seems Vaadin JS somehow just igone click event on the browser side. Also tried with hover() or focus() from JS but nothung happent. Any suggession? Thx! (we are planning to buy TestBench later but until that we have to survive somehow with pure selenium…)