Known problems in XULRunner 1.9.2
org.mozilla.interfaces.inIFlasher
inIFlasher does not work on MacOS. It is needed to show a border around selected elements in VPE.
Workaround: To show a border on MacOS the following style is used: "border: 2px solid COLOR_NAME !important". But the workaround has a drawback: if the selected elements has its own border, it is not visible.
draggesture event
XULRunner does not fire 'draggesture' event on Linux.
Workaround: Special button for Drag&Drop actions is used. Instead of listening to the 'draggesture' events, VPE listens to the 'mousedown' event on this button.