Steps to Reproduce

1. visit the zul with debug-js = false in zk.xml
2. click the menuitem with mobile browser

Current Result

• see it prints 2 lines of log
• check ajax request payload, it contains 2 onClick command

Expected Result

send 1 onClick command

Debug Information

• if debug-js=true, the bug doesn't happen
• call stacks are different in 2 cases, this.$super() calls different parent widgets

mobile && debug-js=false

call stack:

zul.menu.Menuitem.prototype.doClick_() in menuite.ts
this.$super('doClick_', evt, true);
zul.menu.Menuitem.doClick_() in menuitem-touch.ts

mobile && debug-js=true

call stack:

Widget.prototype.doClick_() 
this.$super('doClick_', evt, true);
zul.menu.Menuitem.doClick_() in menuitem-touch.ts

potential problem

need to find the root cause of the different behavior between compressed and uncompressed js and solve it because it might affect multiple widgets

Workaround

zk-5743.js