Hi,
Please let me know if you can simulate this bug (I believe it has been around since version 1.9) Possible Fix: Instead of using a stack approach to undoing objects, why not have a "remove/delete object tool", and when you point to an object (other than any loaded document), the object is removed? I have often wanted to remove particular objects and not remove them in sequence. Issue: Whiteboard objects are not removed (undone) in correct sequence they are placed on the screen by multiple people. Repeatable test: Step 1, Person A joins a Conference room and becomes the moderator of the meeting. Step 2, Person B joins a Conference room. Step 3, Person A grants Person B "Draw on the Whiteboard" rights. Step 4, Person A loads a file (slideshow, PDF) to the whiteboard [NB: this step is optional, but likely in real scenario] Step 5, Person A draws one or more objects on the screen (for example draws an ellipse around a word in the current slide) Step 6, Person B draws one or more objects on the screen (for example draws an ellipse around a different word in the current slide) Step 7, Person A draws another draws an object on the screen (for example an arrow) Step 8, Person B draws another object on the screen (for example an arrow) Step 9, Now if either Person A or Person B attempts to undo each object that has been drawn to the screen, objects are not removed correctly. I am having difficulties in following exactly what is a happening, but I think that on the screen of the person who is undoing the objects, the object/s that were placed on the screen first before the other person placed their object/s, cannot be undone but will then "float" or appear on their view of the Whiteboard all the time, even the slides are advanced. Often the person who is undoing the objects, sees the any remaining objects will keep clicking the Undo, which then remove the loaded document from the other person's screen (but not their own). Note: I believe that the object/s that remain on the screen after the person has pressed the Undo button and cannot remove the object/s, only display on the screen of the person who is doing the "Undoing". The other person's screen is cleared. Can anyone better identify and explain what is actually happening. It looks like OpenMeetings has an object stack for the first person to place an object on the screen and when someone else places an object on the Whiteboard, a global object stack is created, but the contents of the first user's stack is not copied to the global stack, so when the person attempts to "undo" each object from the global stack, the first object/s on their own stack remain. While very annoying, this bug does not stop people from using OpenMeetings, so I have delayed reporting it until now. Thanks, George Kirkham