Normally, spreadsheet contains only ZK PE jar. But if users put zkmax.jar in the same environment, right click on a cell, only upper part of context menu appear.
Client ROD is enabled by default in ZK EE. A menupopup's initial DOM element is just a div without inner elements:
<div id="_z_950" style="display:none"></div>
It will be filled with menu items elements at onOpen event.
The lower part of the context menu is a ZSS customized menupopup, but its onOpen event will never happen. That's the reason it won't appear when right clicking.
For zss.Menupopup, turn off its ZK EE ROD by default to avoid only rendering a div.
Another potential solution:
try to trigger onOpen on zss.Menupopup. But menupopup will perform extra behavior that might cause bigger side effect. So we don't adopt this.
right click on cell, top, and left headers.
IE 8, 9, 10, 11