I'm using zk framework 6.5.1.1 and I have a strange issue on listitem with both click and right click events: I'm working on OSX and the right click event also fire a click event under some conditions.

I created a testcase: in safari and chrome if you rightclick on element 2,3 you can see two popup opening, but on the same application with other browser works fine, also in google chrome running on windows platform

<window title="bug_event_chrome_osx" border="normal" height="100%" width="100%">

<popup id="left_pop">
<label value="LEFT!"></label>
</popup>

<popup id="right_pop" >
<label value="RIGHT!" width="200px" style="background-color:red;"></label>
</popup>

<zscript>

void left_b(){
org.zkoss.zul.Messagebox.show("left");
}
void right_b() {
org.zkoss.zul.Messagebox.show("right");
}

void left_p(org.zkoss.zk.ui.Component c){
left_pop.open(container,"bottom_left");
}
void right_p(org.zkoss.zk.ui.Component c){
right_pop.open(container,"bottom_right");
}

</zscript>

<vlayout id="container" hflex="1" vflex="1">
<listbox hflex="1" vflex="1">

<listitem
onRightClick="right_b()"
onClick="left_b()"
label=" 1 - click and right click me! sometimes seems working fine, but often right click also fire click event, try to move messageboxes"
/>

<listitem
onRightClick="right_p(self)"
onClick="left_p(self)"
label=" 2 - click and right click me! sometimes seems working fine, but often a right click also fires a click event, try to move messageboxes"
/>

<listitem
onRightClick='right_pop.open(container,"top_right");'
onClick='left_pop.open(container,"top_left");'
label=" 3 - click and right click me! in chrome and safari (osx) on right click event also fires a click event"
/>
</listbox>
</vlayout>

</window>