SSRS Report Builder 3: can't move or add some items

Question

I have existing reports that were fine in Report Builder 3, but now when I go into design mode and click on an item, the 4 arrow movement icon shows, but I cannot move any item with the mouse. I can move them with the keyboard though.

Also, I cannot insert charts, tables, matrix, or list items. When I click on those on the ribbon, the drop down doesnt even show. The other functions in the report (like making data sources, datasets, etc work, left and right mouse buttons) work fine, except for moving items. I can also right-click somewhere and insert a table or chart, but don't have the wizard option then, and still can't move the items.

I have uninstalled and reinstalled Report Builder 3, but no luck. These reports work fine on another computer with Report Builder 3. New reports also have the same problem.

Any ideas?

Answer 1

Turned out to be my mouse! Never seen a failure like this, where just SOME windows in SOME programs couldn't be moved, but everything else worked. About a week later, it wouldn't move ANY windows, and even unplugging it and plugging in another one didn't fix it, I had to reboot with new mouse attached. Then it was OK. very odd.