Instead of such usage, use a different browser that has Tabbed feature (I see that you have Firefox). In this case, you don't need Virtual Desktops.
Trying to unweave, unwind, unravel
And piece together the past and the future,
T. S. Eliot
I have the Microsoft Virtual Desktop Manager PowerToy, and I opened one IE window on desktop 1 and two on desktop 2. After working with desktop 2's IE windows, the IE windows on desktop 1 suddenly go away without prior notice.
How can I solve this problem?