Hello,
I had this issue starting a few months ago, and I think its getting really annoying. Randomly, as soon as i hover over the taskbar to any window and click on it, it won't pop out. So, I had to either reset windows explorer process or use alt+tab to get the window to pop out again and after some times, it starts to happen again randomly. Don't know what to do, I cleaned cache, did a reset to file explorer history, did a few registry tricks i found on Google, but nothing worked.